docs: docs update (#911)

Thank you for opening a Pull Request! Before submitting your PR, there are a few things you can do to make sure it goes smoothly:
- [ ] Make sure to open an issue as a [bug/issue](https://github.com/googleapis/google-api-python-client/issues/new/choose) before writing your code!  That way we can discuss the change, evaluate designs, and agree on the general idea
- [ ] Ensure the tests and linter pass
- [ ] Code coverage does not decrease (if any source code was changed)
- [ ] Appropriate docs were updated (if necessary)

Fixes #<issue_number_goes_here> 🦕
diff --git a/docs/dyn/gmail_v1.users.html b/docs/dyn/gmail_v1.users.html
index 882446b..bf34430 100644
--- a/docs/dyn/gmail_v1.users.html
+++ b/docs/dyn/gmail_v1.users.html
@@ -105,93 +105,68 @@
 <p class="firstline">Returns the threads Resource.</p>
 
 <p class="toc_element">
-  <code><a href="#getProfile">getProfile(userId, x__xgafv=None)</a></code></p>
+  <code><a href="#getProfile">getProfile(userId)</a></code></p>
 <p class="firstline">Gets the current user's Gmail profile.</p>
 <p class="toc_element">
-  <code><a href="#stop">stop(userId, x__xgafv=None)</a></code></p>
+  <code><a href="#stop">stop(userId)</a></code></p>
 <p class="firstline">Stop receiving push notifications for the given user mailbox.</p>
 <p class="toc_element">
-  <code><a href="#watch">watch(userId, body=None, x__xgafv=None)</a></code></p>
+  <code><a href="#watch">watch(userId, body=None)</a></code></p>
 <p class="firstline">Set up or update a push notification watch on the given user mailbox.</p>
 <h3>Method Details</h3>
 <div class="method">
-    <code class="details" id="getProfile">getProfile(userId, x__xgafv=None)</code>
-  <pre>Gets the current user's Gmail profile.
+    <code class="details" id="getProfile">getProfile(userId)</code>
+  <pre>Gets the current user&#x27;s Gmail profile.
 
 Args:
-  userId: string, The user's email address. The special value &lt;code&gt;me&lt;/code&gt;
-can be used to indicate the authenticated user. (required)
-  x__xgafv: string, V1 error format.
-    Allowed values
-      1 - v1 error format
-      2 - v2 error format
+  userId: string, The user&#x27;s email address. The special value me can be used to indicate the authenticated user. (required)
 
 Returns:
   An object of the form:
 
     { # Profile for a Gmail user.
-    "messagesTotal": 42, # The total number of messages in the mailbox.
-    "emailAddress": "A String", # The user's email address.
-    "historyId": "A String", # The ID of the mailbox's current history record.
-    "threadsTotal": 42, # The total number of threads in the mailbox.
+    &quot;emailAddress&quot;: &quot;A String&quot;, # The user&#x27;s email address.
+    &quot;historyId&quot;: &quot;A String&quot;, # The ID of the mailbox&#x27;s current history record.
+    &quot;messagesTotal&quot;: 42, # The total number of messages in the mailbox.
+    &quot;threadsTotal&quot;: 42, # The total number of threads in the mailbox.
   }</pre>
 </div>
 
 <div class="method">
-    <code class="details" id="stop">stop(userId, x__xgafv=None)</code>
+    <code class="details" id="stop">stop(userId)</code>
   <pre>Stop receiving push notifications for the given user mailbox.
 
 Args:
-  userId: string, The user's email address. The special value &lt;code&gt;me&lt;/code&gt;
-can be used to indicate the authenticated user. (required)
-  x__xgafv: string, V1 error format.
-    Allowed values
-      1 - v1 error format
-      2 - v2 error format
+  userId: string, The user&#x27;s email address. The special value me can be used to indicate the authenticated user. (required)
 </pre>
 </div>
 
 <div class="method">
-    <code class="details" id="watch">watch(userId, body=None, x__xgafv=None)</code>
+    <code class="details" id="watch">watch(userId, body=None)</code>
   <pre>Set up or update a push notification watch on the given user mailbox.
 
 Args:
-  userId: string, The user's email address. The special value &lt;code&gt;me&lt;/code&gt;
-can be used to indicate the authenticated user. (required)
+  userId: string, The user&#x27;s email address. The special value me can be used to indicate the authenticated user. (required)
   body: object, The request body.
     The object takes the form of:
 
-{ # Set up or update a new push notification watch on this user's mailbox.
-    "labelIds": [ # List of label_ids to restrict notifications about.  By default,
-        # if unspecified, all changes are pushed out.  If specified then
-        # dictates which labels are required for a push notification to
-        # be generated.
-      "A String",
+{ # Set up or update a new push notification watch on this user&#x27;s mailbox.
+    &quot;labelFilterAction&quot;: &quot;A String&quot;, # Filtering behavior of labelIds list specified.
+    &quot;labelIds&quot;: [ # List of label_ids to restrict notifications about. By default, if unspecified, all changes are pushed out. If specified then dictates which labels are required for a push notification to be generated.
+      &quot;A String&quot;,
     ],
-    "topicName": "A String", # A fully qualified Google Cloud Pub/Sub API topic name to publish the
-        # events to. This topic name **must** already exist in Cloud Pub/Sub and
-        # you **must** have already granted gmail "publish" permission on it.
-        # For example, "projects/my-project-identifier/topics/my-topic-name"
-        # (using the Cloud Pub/Sub "v1" topic naming format).
+    &quot;topicName&quot;: &quot;A String&quot;, # A fully qualified Google Cloud Pub/Sub API topic name to publish the events to. This topic name **must** already exist in Cloud Pub/Sub and you **must** have already granted gmail &quot;publish&quot; permission on it. For example, &quot;projects/my-project-identifier/topics/my-topic-name&quot; (using the Cloud Pub/Sub &quot;v1&quot; topic naming format).
         # 
-        # Note that the "my-project-identifier" portion must exactly match your
-        # Google developer project id (the one executing this watch request).
-    "labelFilterAction": "A String", # Filtering behavior of labelIds list specified.
+        # Note that the &quot;my-project-identifier&quot; portion must exactly match your Google developer project id (the one executing this watch request).
   }
 
-  x__xgafv: string, V1 error format.
-    Allowed values
-      1 - v1 error format
-      2 - v2 error format
 
 Returns:
   An object of the form:
 
     { # Push notification watch response.
-    "expiration": "A String", # When Gmail will stop sending notifications for mailbox updates
-        # (epoch millis). Call &lt;code&gt;watch&lt;/code&gt; again before this time to renew
-        # the watch.
-    "historyId": "A String", # The ID of the mailbox's current history record.
+    &quot;expiration&quot;: &quot;A String&quot;, # When Gmail will stop sending notifications for mailbox updates (epoch millis). Call watch again before this time to renew the watch.
+    &quot;historyId&quot;: &quot;A String&quot;, # The ID of the mailbox&#x27;s current history record.
   }</pre>
 </div>