KEYCLOAK-14060 Update links to user ml

examples/themes/src/main/resources/theme/logo-example/welcome/index.ftl

@@ -36,7 +36,7 @@
         <p><a href="http://www.keycloak.org/docs">Documentation</a> | <a href="admin/">Administration Console</a> </p>
 
         <p><a href="http://www.keycloak.org">Keycloak Project</a> |
-            <a href="https://lists.jboss.org/mailman/listinfo/keycloak-user">Mailing List</a> |
+            <a href="https://groups.google.com/forum/#!forum/keycloak-user">Mailing List</a> |
             <a href="https://issues.jboss.org/browse/KEYCLOAK">Report an issue</a></p>
         <p class="logos"><a href="http://www.jboss.org"><img src="welcome-content/jboss_community.png" alt="JBoss and JBoss Community" width="254" height="31" border="0"></a></p>
     </div>

themes/src/main/resources/theme/keycloak/welcome/index.ftl

@@ -112,7 +112,7 @@
             <h3><a href="http://www.keycloak.org"><img src="welcome-content/keycloak-project.png">Keycloak Project <i class="fa fa-angle-right link" aria-hidden="true"></i></a></h3>
           </div>
           <div class="card-pf h-m">
-            <h3><a href="https://lists.jboss.org/mailman/listinfo/keycloak-user"><img src="welcome-content/mail.png">Mailing List <i class="fa fa-angle-right link" aria-hidden="true"></i></a></h3>
+            <h3><a href="https://groups.google.com/forum/#!forum/keycloak-user"><img src="welcome-content/mail.png">Mailing List <i class="fa fa-angle-right link" aria-hidden="true"></i></a></h3>
           </div>
           <div class="card-pf h-m">
             <h3><a href="https://issues.jboss.org/browse/KEYCLOAK"><img src="welcome-content/bug.png">Report an issue <i class="fa fa-angle-right link" aria-hidden="true"></i></a></h3>