chore: Update discovery artifacts (#1386)

## Deleted keys were detected in the following stable discovery artifacts:
admin directory_v1 https://github.com/googleapis/google-api-python-client/commit/7bac81fc588ccbe7b5e6c75af52b719e73efd118
doubleclickbidmanager v1.1 https://github.com/googleapis/google-api-python-client/commit/895ff465e58dffd1f6e29dffd673418c76007e1b

## Discovery Artifact Change Summary:
feat(adexchangebuyer): update the api https://github.com/googleapis/google-api-python-client/commit/3cf7a8dceb567f3c89c307f3496c381af91b0fc6
feat(admin): update the api https://github.com/googleapis/google-api-python-client/commit/7bac81fc588ccbe7b5e6c75af52b719e73efd118
feat(content): update the api https://github.com/googleapis/google-api-python-client/commit/aab557d6c59a5c414d0ac0bc6349763523c9816f
feat(dfareporting): update the api https://github.com/googleapis/google-api-python-client/commit/c83912bec60626d3388fbe749d7a395fa3bc6c22
feat(doubleclickbidmanager): update the api https://github.com/googleapis/google-api-python-client/commit/895ff465e58dffd1f6e29dffd673418c76007e1b
feat(servicecontrol): update the api https://github.com/googleapis/google-api-python-client/commit/facd7ecc18c129cf8010d19d3969e8d5b4598dfc
diff --git a/docs/dyn/drive_v3.files.html b/docs/dyn/drive_v3.files.html
index 1f58444..5b6156c 100644
--- a/docs/dyn/drive_v3.files.html
+++ b/docs/dyn/drive_v3.files.html
@@ -264,7 +264,7 @@
   "name": "A String", # The name of the file. This is not necessarily unique within a folder. Note that for immutable items such as the top level folders of shared drives, My Drive root folder, and Application Data folder the name is constant.
   "originalFilename": "A String", # The original filename of the uploaded content if available, or else the original value of the name field. This is only available for files with binary content in Google Drive.
   "ownedByMe": True or False, # Whether the user owns the file. Not populated for items in shared drives.
-  "owners": [ # The owners of the file. Currently, only certain legacy files may have more than one owner. Not populated for items in shared drives.
+  "owners": [ # The owner of this file. Only certain legacy files may have more than one owner. This field isn't populated for items in shared drives.
     { # Information about a Drive user.
       "displayName": "A String", # A plain text displayable name for this user.
       "emailAddress": "A String", # The email address of the user. This may not be present in certain contexts if the user has not made their email address visible to the requester.
@@ -529,7 +529,7 @@
   "name": "A String", # The name of the file. This is not necessarily unique within a folder. Note that for immutable items such as the top level folders of shared drives, My Drive root folder, and Application Data folder the name is constant.
   "originalFilename": "A String", # The original filename of the uploaded content if available, or else the original value of the name field. This is only available for files with binary content in Google Drive.
   "ownedByMe": True or False, # Whether the user owns the file. Not populated for items in shared drives.
-  "owners": [ # The owners of the file. Currently, only certain legacy files may have more than one owner. Not populated for items in shared drives.
+  "owners": [ # The owner of this file. Only certain legacy files may have more than one owner. This field isn't populated for items in shared drives.
     { # Information about a Drive user.
       "displayName": "A String", # A plain text displayable name for this user.
       "emailAddress": "A String", # The email address of the user. This may not be present in certain contexts if the user has not made their email address visible to the requester.
@@ -792,7 +792,7 @@
   "name": "A String", # The name of the file. This is not necessarily unique within a folder. Note that for immutable items such as the top level folders of shared drives, My Drive root folder, and Application Data folder the name is constant.
   "originalFilename": "A String", # The original filename of the uploaded content if available, or else the original value of the name field. This is only available for files with binary content in Google Drive.
   "ownedByMe": True or False, # Whether the user owns the file. Not populated for items in shared drives.
-  "owners": [ # The owners of the file. Currently, only certain legacy files may have more than one owner. Not populated for items in shared drives.
+  "owners": [ # The owner of this file. Only certain legacy files may have more than one owner. This field isn't populated for items in shared drives.
     { # Information about a Drive user.
       "displayName": "A String", # A plain text displayable name for this user.
       "emailAddress": "A String", # The email address of the user. This may not be present in certain contexts if the user has not made their email address visible to the requester.
@@ -1060,7 +1060,7 @@
   "name": "A String", # The name of the file. This is not necessarily unique within a folder. Note that for immutable items such as the top level folders of shared drives, My Drive root folder, and Application Data folder the name is constant.
   "originalFilename": "A String", # The original filename of the uploaded content if available, or else the original value of the name field. This is only available for files with binary content in Google Drive.
   "ownedByMe": True or False, # Whether the user owns the file. Not populated for items in shared drives.
-  "owners": [ # The owners of the file. Currently, only certain legacy files may have more than one owner. Not populated for items in shared drives.
+  "owners": [ # The owner of this file. Only certain legacy files may have more than one owner. This field isn't populated for items in shared drives.
     { # Information about a Drive user.
       "displayName": "A String", # A plain text displayable name for this user.
       "emailAddress": "A String", # The email address of the user. This may not be present in certain contexts if the user has not made their email address visible to the requester.
@@ -1391,7 +1391,7 @@
   "name": "A String", # The name of the file. This is not necessarily unique within a folder. Note that for immutable items such as the top level folders of shared drives, My Drive root folder, and Application Data folder the name is constant.
   "originalFilename": "A String", # The original filename of the uploaded content if available, or else the original value of the name field. This is only available for files with binary content in Google Drive.
   "ownedByMe": True or False, # Whether the user owns the file. Not populated for items in shared drives.
-  "owners": [ # The owners of the file. Currently, only certain legacy files may have more than one owner. Not populated for items in shared drives.
+  "owners": [ # The owner of this file. Only certain legacy files may have more than one owner. This field isn't populated for items in shared drives.
     { # Information about a Drive user.
       "displayName": "A String", # A plain text displayable name for this user.
       "emailAddress": "A String", # The email address of the user. This may not be present in certain contexts if the user has not made their email address visible to the requester.
@@ -1691,7 +1691,7 @@
       "name": "A String", # The name of the file. This is not necessarily unique within a folder. Note that for immutable items such as the top level folders of shared drives, My Drive root folder, and Application Data folder the name is constant.
       "originalFilename": "A String", # The original filename of the uploaded content if available, or else the original value of the name field. This is only available for files with binary content in Google Drive.
       "ownedByMe": True or False, # Whether the user owns the file. Not populated for items in shared drives.
-      "owners": [ # The owners of the file. Currently, only certain legacy files may have more than one owner. Not populated for items in shared drives.
+      "owners": [ # The owner of this file. Only certain legacy files may have more than one owner. This field isn't populated for items in shared drives.
         { # Information about a Drive user.
           "displayName": "A String", # A plain text displayable name for this user.
           "emailAddress": "A String", # The email address of the user. This may not be present in certain contexts if the user has not made their email address visible to the requester.
@@ -1974,7 +1974,7 @@
   "name": "A String", # The name of the file. This is not necessarily unique within a folder. Note that for immutable items such as the top level folders of shared drives, My Drive root folder, and Application Data folder the name is constant.
   "originalFilename": "A String", # The original filename of the uploaded content if available, or else the original value of the name field. This is only available for files with binary content in Google Drive.
   "ownedByMe": True or False, # Whether the user owns the file. Not populated for items in shared drives.
-  "owners": [ # The owners of the file. Currently, only certain legacy files may have more than one owner. Not populated for items in shared drives.
+  "owners": [ # The owner of this file. Only certain legacy files may have more than one owner. This field isn't populated for items in shared drives.
     { # Information about a Drive user.
       "displayName": "A String", # A plain text displayable name for this user.
       "emailAddress": "A String", # The email address of the user. This may not be present in certain contexts if the user has not made their email address visible to the requester.
@@ -2243,7 +2243,7 @@
   "name": "A String", # The name of the file. This is not necessarily unique within a folder. Note that for immutable items such as the top level folders of shared drives, My Drive root folder, and Application Data folder the name is constant.
   "originalFilename": "A String", # The original filename of the uploaded content if available, or else the original value of the name field. This is only available for files with binary content in Google Drive.
   "ownedByMe": True or False, # Whether the user owns the file. Not populated for items in shared drives.
-  "owners": [ # The owners of the file. Currently, only certain legacy files may have more than one owner. Not populated for items in shared drives.
+  "owners": [ # The owner of this file. Only certain legacy files may have more than one owner. This field isn't populated for items in shared drives.
     { # Information about a Drive user.
       "displayName": "A String", # A plain text displayable name for this user.
       "emailAddress": "A String", # The email address of the user. This may not be present in certain contexts if the user has not made their email address visible to the requester.