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/libraryagent_v1.shelves.books.html b/docs/dyn/libraryagent_v1.shelves.books.html
index 3d6a234..c72181c 100644
--- a/docs/dyn/libraryagent_v1.shelves.books.html
+++ b/docs/dyn/libraryagent_v1.shelves.books.html
@@ -81,7 +81,7 @@
   <code><a href="#get">get(name, x__xgafv=None)</a></code></p>
 <p class="firstline">Gets a book. Returns NOT_FOUND if the book does not exist.</p>
 <p class="toc_element">
-  <code><a href="#list">list(parent, pageSize=None, pageToken=None, x__xgafv=None)</a></code></p>
+  <code><a href="#list">list(parent, pageToken=None, pageSize=None, x__xgafv=None)</a></code></p>
 <p class="firstline">Lists books in a shelf. The order is unspecified but deterministic. Newly</p>
 <p class="toc_element">
   <code><a href="#list_next">list_next(previous_request, previous_response)</a></code></p>
@@ -108,12 +108,12 @@
   An object of the form:
 
     { # A single book in the library.
-    "read": True or False, # Value indicating whether the book has been read.
-    "title": "A String", # The title of the book.
-    "name": "A String", # The resource name of the book.
+    &quot;read&quot;: True or False, # Value indicating whether the book has been read.
+    &quot;title&quot;: &quot;A String&quot;, # The title of the book.
+    &quot;name&quot;: &quot;A String&quot;, # The resource name of the book.
         # Book names have the form `shelves/{shelf_id}/books/{book_id}`.
         # The name is ignored when creating a book.
-    "author": "A String", # The name of the book author.
+    &quot;author&quot;: &quot;A String&quot;, # The name of the book author.
   }</pre>
 </div>
 
@@ -132,29 +132,29 @@
   An object of the form:
 
     { # A single book in the library.
-    "read": True or False, # Value indicating whether the book has been read.
-    "title": "A String", # The title of the book.
-    "name": "A String", # The resource name of the book.
+    &quot;read&quot;: True or False, # Value indicating whether the book has been read.
+    &quot;title&quot;: &quot;A String&quot;, # The title of the book.
+    &quot;name&quot;: &quot;A String&quot;, # The resource name of the book.
         # Book names have the form `shelves/{shelf_id}/books/{book_id}`.
         # The name is ignored when creating a book.
-    "author": "A String", # The name of the book author.
+    &quot;author&quot;: &quot;A String&quot;, # The name of the book author.
   }</pre>
 </div>
 
 <div class="method">
-    <code class="details" id="list">list(parent, pageSize=None, pageToken=None, x__xgafv=None)</code>
+    <code class="details" id="list">list(parent, pageToken=None, pageSize=None, x__xgafv=None)</code>
   <pre>Lists books in a shelf. The order is unspecified but deterministic. Newly
 created books will not necessarily be added to the end of this list.
 Returns NOT_FOUND if the shelf does not exist.
 
 Args:
-  parent: string, Required. The name of the shelf whose books we'd like to list. (required)
-  pageSize: integer, Requested page size. Server may return fewer books than requested.
-If unspecified, server will pick an appropriate default.
+  parent: string, Required. The name of the shelf whose books we&#x27;d like to list. (required)
   pageToken: string, A token identifying a page of results the server should return.
 Typically, this is the value of
 ListBooksResponse.next_page_token.
 returned from the previous call to `ListBooks` method.
+  pageSize: integer, Requested page size. Server may return fewer books than requested.
+If unspecified, server will pick an appropriate default.
   x__xgafv: string, V1 error format.
     Allowed values
       1 - v1 error format
@@ -164,19 +164,19 @@
   An object of the form:
 
     { # Response message for LibraryAgent.ListBooks.
-    "nextPageToken": "A String", # A token to retrieve next page of results.
+    &quot;nextPageToken&quot;: &quot;A String&quot;, # A token to retrieve next page of results.
         # Pass this value in the
         # ListBooksRequest.page_token
         # field in the subsequent call to `ListBooks` method to retrieve the next
         # page of results.
-    "books": [ # The list of books.
+    &quot;books&quot;: [ # The list of books.
       { # A single book in the library.
-        "read": True or False, # Value indicating whether the book has been read.
-        "title": "A String", # The title of the book.
-        "name": "A String", # The resource name of the book.
+        &quot;read&quot;: True or False, # Value indicating whether the book has been read.
+        &quot;title&quot;: &quot;A String&quot;, # The title of the book.
+        &quot;name&quot;: &quot;A String&quot;, # The resource name of the book.
             # Book names have the form `shelves/{shelf_id}/books/{book_id}`.
             # The name is ignored when creating a book.
-        "author": "A String", # The name of the book author.
+        &quot;author&quot;: &quot;A String&quot;, # The name of the book author.
       },
     ],
   }</pre>
@@ -191,7 +191,7 @@
   previous_response: The response from the request for the previous page. (required)
 
 Returns:
-  A request object that you can call 'execute()' on to request the next
+  A request object that you can call &#x27;execute()&#x27; on to request the next
   page. Returns None if there are no more items in the collection.
     </pre>
 </div>
@@ -201,7 +201,7 @@
   <pre>Return a book to the library. Returns the book if it is returned to the
 library successfully.
 Returns error if the book does not belong to the library
-or the users didn't borrow before.
+or the users didn&#x27;t borrow before.
 
 Args:
   name: string, Required. The name of the book to return. (required)
@@ -214,12 +214,12 @@
   An object of the form:
 
     { # A single book in the library.
-    "read": True or False, # Value indicating whether the book has been read.
-    "title": "A String", # The title of the book.
-    "name": "A String", # The resource name of the book.
+    &quot;read&quot;: True or False, # Value indicating whether the book has been read.
+    &quot;title&quot;: &quot;A String&quot;, # The title of the book.
+    &quot;name&quot;: &quot;A String&quot;, # The resource name of the book.
         # Book names have the form `shelves/{shelf_id}/books/{book_id}`.
         # The name is ignored when creating a book.
-    "author": "A String", # The name of the book author.
+    &quot;author&quot;: &quot;A String&quot;, # The name of the book author.
   }</pre>
 </div>