Add Feed to monkeypatch to fix generic issue. (#1002)

Fixes #1001

django_stubs_ext/django_stubs_ext/patch.py

@@ -3,6 +3,7 @@ from typing import Any, Generic, Iterable, List, Optional, Tuple, Type, TypeVar
 from django import VERSION as VERSION
 from django.contrib.admin import ModelAdmin
 from django.contrib.admin.options import BaseModelAdmin
+from django.contrib.syndication.views import Feed
 from django.core.paginator import Paginator
 from django.db.models.fields import Field
 from django.db.models.manager import BaseManager
@@ -52,6 +53,7 @@ _need_generic: List[MPGeneric[Any]] = [
     MPGeneric(BaseFormSet),
     MPGeneric(BaseModelForm),
     MPGeneric(BaseModelFormSet),
+    MPGeneric(Feed),
     # These types do have native `__class_getitem__` method since django 3.1:
     MPGeneric(QuerySet, (3, 1)),
     MPGeneric(BaseManager, (3, 1)),