docs: update generated docs (#981)

diff --git a/docs/dyn/compute_beta.regionInstanceGroups.html b/docs/dyn/compute_beta.regionInstanceGroups.html
index 9708883..142b371 100644
--- a/docs/dyn/compute_beta.regionInstanceGroups.html
+++ b/docs/dyn/compute_beta.regionInstanceGroups.html
@@ -82,7 +82,7 @@
 <p class="firstline">Retrieves the list of instance group resources contained within the specified region.</p>
 <p class="toc_element">
   <code><a href="#listInstances">listInstances(project, region, instanceGroup, body=None, filter=None, maxResults=None, orderBy=None, pageToken=None)</a></code></p>
-<p class="firstline">Lists the instances in the specified instance group and displays information about the named ports. Depending on the specified options, this method can list all instances or only the instances that are running.</p>
+<p class="firstline">Lists the instances in the specified instance group and displays information about the named ports. Depending on the specified options, this method can list all instances or only the instances that are running. The orderBy query parameter is not supported.</p>
 <p class="toc_element">
   <code><a href="#listInstances_next">listInstances_next(previous_request, previous_response)</a></code></p>
 <p class="firstline">Retrieves the next page of results.</p>
@@ -230,7 +230,7 @@
 
 <div class="method">
     <code class="details" id="listInstances">listInstances(project, region, instanceGroup, body=None, filter=None, maxResults=None, orderBy=None, pageToken=None)</code>
-  <pre>Lists the instances in the specified instance group and displays information about the named ports. Depending on the specified options, this method can list all instances or only the instances that are running.
+  <pre>Lists the instances in the specified instance group and displays information about the named ports. Depending on the specified options, this method can list all instances or only the instances that are running. The orderBy query parameter is not supported.
 
 Args:
   project: string, Project ID for this request. (required)