Update docs for v1.5.3
diff --git a/docs/dyn/servicemanagement_v1.services.configs.html b/docs/dyn/servicemanagement_v1.services.configs.html
index 01578cb..62e3f0b 100644
--- a/docs/dyn/servicemanagement_v1.services.configs.html
+++ b/docs/dyn/servicemanagement_v1.services.configs.html
@@ -150,7 +150,9 @@
         },
       ],
       "displayName": "A String", # Optional. A concise name for the monitored resource type that might be
-          # displayed in user interfaces. For example, `"Google Cloud SQL Database"`.
+          # displayed in user interfaces. It should be a Title Cased Noun Phrase,
+          # without any article or other determiners. For example,
+          # `"Google Cloud SQL Database"`.
       "description": "A String", # Optional. A detailed description of the monitored resource type that might
           # be used in documentation.
       "name": "A String", # Optional. The resource name of the monitored resource descriptor:
@@ -409,8 +411,13 @@
                 #                bookstore_web.apps.googleusercontent.com
           },
         ],
-        "allowWithoutCredential": True or False, # Whether to allow requests without a credential.  If quota is enabled, an
-            # API key is required for such request to pass the quota check.
+        "allowWithoutCredential": True or False, # Whether to allow requests without a credential. The credential can be
+            # an OAuth token, Google cookies (first-party auth) or EndUserCreds.
+            #
+            # For requests without credentials, if the service control environment is
+            # specified, each incoming request **must** be associated with a service
+            # consumer. This can be done by passing an API key that belongs to a consumer
+            # project.
         "selector": "A String", # Selects the methods to which this rule applies.
             #
             # Refer to selector for syntax details.
@@ -1475,7 +1482,9 @@
           },
         ],
         "displayName": "A String", # Optional. A concise name for the monitored resource type that might be
-            # displayed in user interfaces. For example, `"Google Cloud SQL Database"`.
+            # displayed in user interfaces. It should be a Title Cased Noun Phrase,
+            # without any article or other determiners. For example,
+            # `"Google Cloud SQL Database"`.
         "description": "A String", # Optional. A detailed description of the monitored resource type that might
             # be used in documentation.
         "name": "A String", # Optional. The resource name of the monitored resource descriptor:
@@ -1734,8 +1743,13 @@
                   #                bookstore_web.apps.googleusercontent.com
             },
           ],
-          "allowWithoutCredential": True or False, # Whether to allow requests without a credential.  If quota is enabled, an
-              # API key is required for such request to pass the quota check.
+          "allowWithoutCredential": True or False, # Whether to allow requests without a credential. The credential can be
+              # an OAuth token, Google cookies (first-party auth) or EndUserCreds.
+              #
+              # For requests without credentials, if the service control environment is
+              # specified, each incoming request **must** be associated with a service
+              # consumer. This can be done by passing an API key that belongs to a consumer
+              # project.
           "selector": "A String", # Selects the methods to which this rule applies.
               #
               # Refer to selector for syntax details.
@@ -2809,7 +2823,9 @@
           },
         ],
         "displayName": "A String", # Optional. A concise name for the monitored resource type that might be
-            # displayed in user interfaces. For example, `"Google Cloud SQL Database"`.
+            # displayed in user interfaces. It should be a Title Cased Noun Phrase,
+            # without any article or other determiners. For example,
+            # `"Google Cloud SQL Database"`.
         "description": "A String", # Optional. A detailed description of the monitored resource type that might
             # be used in documentation.
         "name": "A String", # Optional. The resource name of the monitored resource descriptor:
@@ -3068,8 +3084,13 @@
                   #                bookstore_web.apps.googleusercontent.com
             },
           ],
-          "allowWithoutCredential": True or False, # Whether to allow requests without a credential.  If quota is enabled, an
-              # API key is required for such request to pass the quota check.
+          "allowWithoutCredential": True or False, # Whether to allow requests without a credential. The credential can be
+              # an OAuth token, Google cookies (first-party auth) or EndUserCreds.
+              #
+              # For requests without credentials, if the service control environment is
+              # specified, each incoming request **must** be associated with a service
+              # consumer. This can be done by passing an API key that belongs to a consumer
+              # project.
           "selector": "A String", # Selects the methods to which this rule applies.
               #
               # Refer to selector for syntax details.
@@ -4148,7 +4169,9 @@
               },
             ],
             "displayName": "A String", # Optional. A concise name for the monitored resource type that might be
-                # displayed in user interfaces. For example, `"Google Cloud SQL Database"`.
+                # displayed in user interfaces. It should be a Title Cased Noun Phrase,
+                # without any article or other determiners. For example,
+                # `"Google Cloud SQL Database"`.
             "description": "A String", # Optional. A detailed description of the monitored resource type that might
                 # be used in documentation.
             "name": "A String", # Optional. The resource name of the monitored resource descriptor:
@@ -4407,8 +4430,13 @@
                       #                bookstore_web.apps.googleusercontent.com
                 },
               ],
-              "allowWithoutCredential": True or False, # Whether to allow requests without a credential.  If quota is enabled, an
-                  # API key is required for such request to pass the quota check.
+              "allowWithoutCredential": True or False, # Whether to allow requests without a credential. The credential can be
+                  # an OAuth token, Google cookies (first-party auth) or EndUserCreds.
+                  #
+                  # For requests without credentials, if the service control environment is
+                  # specified, each incoming request **must** be associated with a service
+                  # consumer. This can be done by passing an API key that belongs to a consumer
+                  # project.
               "selector": "A String", # Selects the methods to which this rule applies.
                   #
                   # Refer to selector for syntax details.