RHDEVDOCS 5735 version selector for GitOps 1.11

Author: mramendi

_templates/_page_openshift.html.erb

@@ -241,6 +241,7 @@
               <%= distro %>
             </a>
             <select id="version-selector" onchange="versionSelector(this);">
+              <option value="1.11">1.11</option>
               <option value="1.10">1.10</option>
               <option value="1.9">1.9</option>
               <option value="1.8">1.8</option>