Return an empty queryset instead of an empty list

docs/pages/docs/django/authorization.md

@@ -75,7 +75,7 @@ class Query(ObjectType):
     def resolve_my_posts(self, args, context, info):
         # context will reference to the Django request
         if not context.user.is_authenticated():
-            return []
+            return Post.objects.none()
         else:
             return Post.objects.filter(owner=context.user)
 ```