Fixed #8189, another use of get_FOO_url() missed in the docs after filestorage.

       subdirectory of ``MEDIA_ROOT`` it should upload files.

    3. All that will be stored in your database is a path to the file

       (relative to ``MEDIA_ROOT``). You'll most likely want to use the

       convenience ``get_<fieldname>_url`` function provided by Django. For

       example, if your ``ImageField`` is called ``mug_shot``, you can get

       the absolute URL to your image in a template with ``{{

       object.get_mug_shot_url }}``.

       (relative to ``MEDIA_ROOT``). You'll most likely want to use

       ``object.<field>.url`` to get the actual URL. For example, if your

       ``ImageField`` is called ``mug_shot``, you can get the absolute URL to

       your image in a template with ``{{ object.mug_shot.url }}``.

For example, say your ``MEDIA_ROOT`` is set to ``'/home/media'``, and

``upload_to`` is set to ``'photos/%Y/%m/%d'``. The ``'%Y/%m/%d'`` part of