Add erb file

Author: Yi Fan

website/oci.erb

@@ -50,6 +50,9 @@
             <li<%= sidebar_current("docs-oci-guide-version-3-upgrade") %>>
                 <a href="/docs/providers/oci/guides/version-3-upgrade.html">Upgrading to Version 3</a>
             </li>
+            <li<%= sidebar_current("docs-oci-guide-examples") %>>
+                <a href="/docs/providers/oci/guides/examples.html">Examples</a>
+            </li>
         </ul>
         </li>
         <li<%= sidebar_current("docs-oci-apigateway") %>>