Update docs for 1.4.2 release
diff --git a/docs/dyn/youtube_v3.subscriptions.html b/docs/dyn/youtube_v3.subscriptions.html
index 0bda050..24fe2e0 100644
--- a/docs/dyn/youtube_v3.subscriptions.html
+++ b/docs/dyn/youtube_v3.subscriptions.html
@@ -78,7 +78,7 @@
   <code><a href="#delete">delete(id)</a></code></p>
 <p class="firstline">Deletes a subscription.</p>
 <p class="toc_element">
-  <code><a href="#insert">insert(part=None, body)</a></code></p>
+  <code><a href="#insert">insert(part, body)</a></code></p>
 <p class="firstline">Adds a subscription for the authenticated user's channel.</p>
 <p class="toc_element">
   <code><a href="#list">list(part=None, channelId=None, mine=None, mySubscribers=None, id=None, onBehalfOfContentOwner=None, pageToken=None, forChannelId=None, onBehalfOfContentOwnerChannel=None, maxResults=None, order=None)</a></code></p>
@@ -97,13 +97,11 @@
 </div>
 
 <div class="method">
-    <code class="details" id="insert">insert(part=None, body)</code>
+    <code class="details" id="insert">insert(part, body)</code>
   <pre>Adds a subscription for the authenticated user's channel.
 
 Args:
-  part: string, The part parameter serves two purposes in this operation. It identifies the properties that the write operation will set as well as the properties that the API response will include.
-
-The part names that you can include in the parameter value are snippet and contentDetails. (required)
+  part: string, The part parameter serves two purposes in this operation. It identifies the properties that the write operation will set as well as the properties that the API response will include. (required)
   body: object, The request body. (required)
     The object takes the form of:
 
@@ -283,7 +281,7 @@
   <pre>Returns subscription resources that match the API request criteria.
 
 Args:
-  part: string, The part parameter specifies a comma-separated list of one or more subscription resource properties that the API response will include. The part names that you can include in the parameter value are id, snippet, and contentDetails.
+  part: string, The part parameter specifies a comma-separated list of one or more subscription resource properties that the API response will include.
 
 If the parameter identifies a property that contains child properties, the child properties will be included in the response. For example, in a subscription resource, the snippet property contains other properties, such as a display title for the subscription. If you set part=snippet, the API response will also contain all of those nested properties. (required)
   channelId: string, The channelId parameter specifies a YouTube channel ID. The API will only return that channel's subscriptions.