Really get the links right.

setup.py

@@ -62,7 +62,7 @@ dist = setup(
     version = supervisor_version,
     license = 'BSD-derived (http://www.repoze.org/LICENSE.txt)',
     url = 'http://supervisord.org/',
-    download_url = 'http://supervisord.org/dist/'
+    download_url = 'http://supervisord.org/dist/',
     description = "A system for controlling process state under UNIX",
     long_description= DESC,
     classifiers = CLASSIFIERS,