Added pointer to the second mailing list archive.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@268144 13f79535-47bb-0310-9956-ffa450edef68

docs/index.html

@@ -5556,7 +5556,10 @@ development, join the Ant Development Mail List (<a
 href="mailto:ant-dev-subscribe@jakarta.apache.org">ant-dev-subscribe@jakarta.apache.org</a>)</p>
 <p>Archives of both lists can be found at <a
 href="http://archive.covalent.net/">http://archive.covalent.net/</a>. Many
-thanks to Covalent Technologies.</p>
+thanks to Covalent Technologies. Another archive can be found at <a
+href="http://marc.theaimsgroup.com">http://marc.theaimsgroup.com</a>. If
+you now of any additional archive sites, please report to the
+lists.</p>
 <hr>
 <p align="center">Copyright &copy; 2000 Apache Software Foundation. All rights
 Reserved.</p>