adding to index

Author: lukegriffith

website/gitlab.erb

@@ -85,6 +85,9 @@
           <li<%= sidebar_current("docs-gitlab-resource-project_membership") %>>
               <a href="/docs/providers/gitlab/r/project_membership.html">gitlab_project_membership</a>
           </li>
+          <li<%= sidebar_current("docs-gitlab-resource-project_mirror") %>>
+              <a href="/docs/providers/gitlab/r/project_mirror.html">gitlab_project_mirror</a>
+          </li>
           <li<%= sidebar_current("docs-gitlab-resource-project_share_group") %>>
               <a href="/docs/providers/gitlab/r/project_share_group.html">gitlab_project_share_group</a>
           <li<%= sidebar_current("docs-gitlab-resource-project_push_rules") %>>