Release v1.6.0 (#324)

* Update version and changelog for v1.6.0
* Update docs
diff --git a/docs/dyn/dns_v2beta1.dnskeys.html b/docs/dyn/dns_v2beta1.dnskeys.html
index 95d6a9b..9895347 100644
--- a/docs/dyn/dns_v2beta1.dnskeys.html
+++ b/docs/dyn/dns_v2beta1.dnskeys.html
@@ -72,7 +72,7 @@
 
 </style>
 
-<h1><a href="dns_v2beta1.html">Google Cloud DNS API</a> . <a href="dns_v2beta1.dnskeys.html">dnskeys</a></h1>
+<h1><a href="dns_v2beta1.html">Google Cloud DNS API</a> . <a href="dns_v2beta1.dnsKeys.html">dnsKeys</a></h1>
 <h2>Instance Methods</h2>
 <p class="toc_element">
   <code><a href="#get">get(project, managedZone, dnsKeyId, digestType=None, clientOperationId=None)</a></code></p>