[1.2.X] Fixed #14737 -- Moved the docstring comment for the cache_page...

[1.2.X] Fixed #14737 -- Moved the docstring comment for the cache_page decorator so it gets picked up as a docstring. Thanks to adamv for the report and patch.

Backport of r14798 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14802 bcc190cf-cafb-0310-a4f2-bffc1f526a37