[1.2.X] Fixed #14463 -- Fixed links to new location of date/time format specifiers docs.

Thanks epicserve for the report.

Backport of [14325] from trunk

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.2.X@14326 bcc190cf-cafb-0310-a4f2-bffc1f526a37