Nabble URLs have changed

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@916127 13f79535-47bb-0310-9956-ffa450edef68

xdocs/mail.xml

@@ -128,8 +128,8 @@
           <li><a href="http://marc.theaimsgroup.com/">Mailing list Archives</a></li>
           <li><a href="http://news.gmane.org/gmane.comp.jakarta.ant.devel/">Ant Developer List on gmane</a></li>
           <li><a href="http://news.gmane.org/gmane.comp.jakarta.ant.user/">Ant User List on gmane</a></li>
-          <li><a href="http://www.nabble.com/Ant---Dev-f108.html">Ant Developer List on nabble</a></li>
-          <li><a href="http://www.nabble.com/Ant---Users-f107.html">Ant User List on nabble</a></li>
+          <li><a href="http://old.nabble.com/Ant---Dev-f108.html">Ant Developer List on nabble</a></li>
+          <li><a href="http://old.nabble.com/Ant---Users-f107.html">Ant User List on nabble</a></li>
           <li><a href="http://ant.markmail.org/">Mailing List Archive at MarkMail</a></li>
         </ul>