Clean and regen docs (#401)

diff --git a/docs/dyn/gmail_v1.users.messages.html b/docs/dyn/gmail_v1.users.messages.html
index f547d85..bcdab0e 100644
--- a/docs/dyn/gmail_v1.users.messages.html
+++ b/docs/dyn/gmail_v1.users.messages.html
@@ -413,7 +413,7 @@
 Args:
   userId: string, The user's email address. The special value me can be used to indicate the authenticated user. (required)
   labelIds: string, Only return messages with labels that match all of the specified label IDs. (repeated)
-  q: string, Only return messages matching the specified query. Supports the same query format as the Gmail search box. For example, "from:someuser@example.com rfc822msgid: is:unread". Parameter cannot be used when accessing the api using the gmail.metadata scope.
+  q: string, Only return messages matching the specified query. Supports the same query format as the Gmail search box. For example, "from:someuser@example.com rfc822msgid:<somemsgid@example.com> is:unread". Parameter cannot be used when accessing the api using the gmail.metadata scope.
   pageToken: string, Page token to retrieve a specific page of results in the list.
   maxResults: integer, Maximum number of messages to return.
   includeSpamTrash: boolean, Include messages from SPAM and TRASH in the results.