Fixed a very old email address of mine still lingering in the AUTHORS file

AUTHORS

@@ -488,7 +488,7 @@ answer newbie questions, and generally made Django that much better:
     Brian Ray <http://brianray.chipy.org/>
     Lee Reilly <lee@leereilly.net>
     Łukasz Rekucki <lrekucki@gmail.com>
-    remco@diji.biz
+    Remco Wendt <remco.wendt@gmail.com>
     Marc Remolt <m.remolt@webmasters.de>
     Bruno Renié <buburno@gmail.com>
     David Reynolds <david@reynoldsfamily.org.uk>