Fixed #14562 -- corrected a typo in the static-files howto. Thanks to...

Fixed #14562 -- corrected a typo in the static-files howto. Thanks to stephaner for the report and patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14355 bcc190cf-cafb-0310-a4f2-bffc1f526a37