Mypy issues (#278)

Author: KingDarBoja

graphql/execution/tests/test_executor.py

@@ -116,7 +116,7 @@ def deeper(self):
             "f": GraphQLField(GraphQLString),
             "pic": GraphQLField(
                 args={"size": GraphQLArgument(GraphQLInt)},
-                type=GraphQLString,
+                type_=GraphQLString,
                 resolver=lambda obj, info, size: obj.pic(size),
             ),
             "deep": GraphQLField(DeepDataType),