[1.2.X] Fixed #14736 -- corrected an ungrammatical sentence in the template...

[1.2.X] Fixed #14736 -- corrected an ungrammatical sentence in the template tags docs. Thanks to DD for the report and adamv for the draft patch.

Backport of [14677] from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14678 bcc190cf-cafb-0310-a4f2-bffc1f526a37