chore: update docs/dyn (#1162)

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diff --git a/docs/dyn/chat_v1.spaces.messages.attachments.html b/docs/dyn/chat_v1.spaces.messages.attachments.html
index 306c6d8..ee2daa4 100644
--- a/docs/dyn/chat_v1.spaces.messages.attachments.html
+++ b/docs/dyn/chat_v1.spaces.messages.attachments.html
@@ -101,19 +101,19 @@
   An object of the form:
 
     { # An attachment in Hangouts Chat.
-    "thumbnailUri": "A String", # Output only. The thumbnail URL which should be used to preview the attachment to a human user. Bots should not use this URL to download attachment content.
-    "attachmentDataRef": { # A reference to the data of an attachment. # A reference to the attachment data. This is used with the media API to download the attachment data.
-      "resourceName": "A String", # The resource name of the attachment data. This is used with the media API to download the attachment data.
-    },
-    "contentName": "A String", # The original file name for the content, not the full path.
-    "driveDataRef": { # A reference to the data of a drive attachment. # A reference to the drive attachment. This is used with the Drive API.
-      "driveFileId": "A String", # The id for the drive file, for use with the Drive API.
-    },
-    "contentType": "A String", # The content type (MIME type) of the file.
-    "downloadUri": "A String", # Output only. The download URL which should be used to allow a human user to download the attachment. Bots should not use this URL to download attachment content.
-    "name": "A String", # Resource name of the attachment, in the form "spaces/*/messages/*/attachments/*".
-    "source": "A String", # The source of the attachment.
-  }</pre>
+  &quot;attachmentDataRef&quot;: { # A reference to the data of an attachment. # A reference to the attachment data. This is used with the media API to download the attachment data.
+    &quot;resourceName&quot;: &quot;A String&quot;, # The resource name of the attachment data. This is used with the media API to download the attachment data.
+  },
+  &quot;contentName&quot;: &quot;A String&quot;, # The original file name for the content, not the full path.
+  &quot;contentType&quot;: &quot;A String&quot;, # The content type (MIME type) of the file.
+  &quot;downloadUri&quot;: &quot;A String&quot;, # Output only. The download URL which should be used to allow a human user to download the attachment. Bots should not use this URL to download attachment content.
+  &quot;driveDataRef&quot;: { # A reference to the data of a drive attachment. # A reference to the drive attachment. This is used with the Drive API.
+    &quot;driveFileId&quot;: &quot;A String&quot;, # The id for the drive file, for use with the Drive API.
+  },
+  &quot;name&quot;: &quot;A String&quot;, # Resource name of the attachment, in the form &quot;spaces/*/messages/*/attachments/*&quot;.
+  &quot;source&quot;: &quot;A String&quot;, # The source of the attachment.
+  &quot;thumbnailUri&quot;: &quot;A String&quot;, # Output only. The thumbnail URL which should be used to preview the attachment to a human user. Bots should not use this URL to download attachment content.
+}</pre>
 </div>
 
 </body></html>
\ No newline at end of file