Corrected models.FileField signature in docs.
@@ -771,7 +771,7 @@ A :class:`CharField` that checks that the value is a valid email address using
``FileField``
-------------
-.. class:: FileField(upload_to=None, max_length=100, **options)
+.. class:: FileField(upload_to='', storage=None, max_length=100, **options)
A file-upload field.
