Add download links for the server packages.

Change-Id: Ib852cde3e959f61fc2c95650535333c0b137c843
Reviewed-on: https://asterix-gerrit.ics.uci.edu/1502
Reviewed-by: Ian Maxon <imaxon@apache.org>
diff --git a/content/index.html b/content/index.html
index 8ac0d81..4e1e781 100644
--- a/content/index.html
+++ b/content/index.html
@@ -182,7 +182,7 @@
   </div>
   <div class="col-md-4">
     <h3 id="community-and-support">Community and Support</h3>
-    <p>If you have any questions, please feel free to ask on our <a href="mailto:users@asterixdb.apache.org">users</a> mailing list, which you can subscribe to by sending an empty email to <a href="users-subscribe@asterixdb.apache.org">users-subscribe</a>. Check out the <a href="community.html">Community</a> page for more details.</p>
+    <p>If you have any questions, please feel free to ask on our <a href="&#109;&#097;&#105;&#108;&#116;&#111;:&#117;&#115;&#101;&#114;&#115;&#064;&#097;&#115;&#116;&#101;&#114;&#105;&#120;&#100;&#098;&#046;&#097;&#112;&#097;&#099;&#104;&#101;&#046;&#111;&#114;&#103;">users</a> mailing list, which you can subscribe to by sending an empty email to <a href="users-subscribe@asterixdb.apache.org">users-subscribe</a>. Check out the <a href="community.html">Community</a> page for more details.</p>
 
     <p>If you would like to know more about how to contribute to AsterixDB or any of its related components, head on over to the <a href="dev-setup.html">Contributing</a> page to learn more.</p>
   </div>