chore: regens API reference docs (#889)

diff --git a/docs/dyn/youtube_v3.comments.html b/docs/dyn/youtube_v3.comments.html
index 6d89386..0f62563 100644
--- a/docs/dyn/youtube_v3.comments.html
+++ b/docs/dyn/youtube_v3.comments.html
@@ -78,7 +78,7 @@
   <code><a href="#delete">delete(id)</a></code></p>
 <p class="firstline">Deletes a comment.</p>
 <p class="toc_element">
-  <code><a href="#insert">insert(part, body)</a></code></p>
+  <code><a href="#insert">insert(part, body=None)</a></code></p>
 <p class="firstline">Creates a reply to an existing comment. Note: To create a top-level comment, use the commentThreads.insert method.</p>
 <p class="toc_element">
   <code><a href="#list">list(part, pageToken=None, maxResults=None, id=None, parentId=None, textFormat=None)</a></code></p>
@@ -93,7 +93,7 @@
   <code><a href="#setModerationStatus">setModerationStatus(id, moderationStatus, banAuthor=None)</a></code></p>
 <p class="firstline">Sets the moderation status of one or more comments. The API request must be authorized by the owner of the channel or video associated with the comments.</p>
 <p class="toc_element">
-  <code><a href="#update">update(part, body)</a></code></p>
+  <code><a href="#update">update(part, body=None)</a></code></p>
 <p class="firstline">Modifies a comment.</p>
 <h3>Method Details</h3>
 <div class="method">
@@ -106,12 +106,12 @@
 </div>
 
 <div class="method">
-    <code class="details" id="insert">insert(part, body)</code>
+    <code class="details" id="insert">insert(part, body=None)</code>
   <pre>Creates a reply to an existing comment. Note: To create a top-level comment, use the commentThreads.insert method.
 
 Args:
   part: string, The part parameter identifies the properties that the API response will include. Set the parameter value to snippet. The snippet part has a quota cost of 2 units. (required)
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 { # A comment represents a single YouTube comment.
@@ -271,12 +271,12 @@
 </div>
 
 <div class="method">
-    <code class="details" id="update">update(part, body)</code>
+    <code class="details" id="update">update(part, body=None)</code>
   <pre>Modifies a comment.
 
 Args:
   part: string, The part parameter identifies the properties that the API response will include. You must at least include the snippet part in the parameter value since that part contains all of the properties that the API request can update. (required)
-  body: object, The request body. (required)
+  body: object, The request body.
     The object takes the form of:
 
 { # A comment represents a single YouTube comment.