Fixed #20677 - Typos in generic_inlineformset_factory docs.

Thanks Riley Strong for the report.

django/contrib/contenttypes/generic.py

@@ -434,8 +434,8 @@ def generic_inlineformset_factory(model, form=ModelForm,
     """
     Returns a ``GenericInlineFormSet`` for the given kwargs.
 
-    You must provide ``ct_field`` and ``object_id`` if they different from the
-    defaults ``content_type`` and ``object_id`` respectively.
+    You must provide ``ct_field`` and ``fk_field`` if they are different from
+    the defaults ``content_type`` and ``object_id`` respectively.
     """
     opts = model._meta
     # if there is no field called `ct_field` let the exception propagate

docs/ref/contrib/contenttypes.txt

@@ -506,9 +506,9 @@ information.
     Returns a ``GenericInlineFormSet`` using
     :func:`~django.forms.models.modelformset_factory`.
 
-    You must provide ``ct_field`` and ``object_id`` if they different from the
-    defaults, ``content_type`` and ``object_id`` respectively. Other parameters
-    are similar to those documented in
+    You must provide ``ct_field`` and ``fk_field`` if they are different from
+    the defaults, ``content_type`` and ``object_id`` respectively. Other
+    parameters are similar to those documented in
     :func:`~django.forms.models.modelformset_factory` and
     :func:`~django.forms.models.inlineformset_factory`.