[1.1.X] Fixed #6039 -- Modified Atom example to be standard compliant. Thanks...

[1.1.X] Fixed #6039 -- Modified Atom example to be standard compliant. Thanks to ion.morega@gmail.com for the report, and arien for the patch.

Backport of r13179 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.1.X@13181 bcc190cf-cafb-0310-a4f2-bffc1f526a37