fix flake8

Author: Mateusz Sikora

rest_auth/registration/views.py

@@ -67,7 +67,7 @@ def post(self, request, *args, **kwargs):
     def get_response(self):
         # serializer = self.user_serializer_class(instance=self.user)
         serializer = self.serializer_class(instance=self.token,
-                context={'request': self.request})
+                                           context={'request': self.request})
         return Response(serializer.data, status=status.HTTP_201_CREATED)
 
     def get_response_with_errors(self):