make Mutation class ObjectType. (#748)

a-c-sreedhar-reddy · jkimbo · commit 1b8184ece146 · 2019-08-16T14:34:28.000+01:00
diff --git a/docs/mutations.rst b/docs/mutations.rst
@@ -44,7 +44,7 @@ Simple example
             return QuestionMutation(question=question)
 
 
-    class Mutation:
+    class Mutation(graphene.ObjectType):
         update_question = QuestionMutation.Field()
 
 
