Fix JSON scalars typings #104

Author: ardatan

types/graphql-type-json.d.ts

@@ -1,5 +1,5 @@
 declare module "graphql-type-json" {
     import { GraphQLScalarType } from "graphql";
-    export const GraphQLJSON: typeof GraphQLScalarType;
-    export const GraphQLJSONObject: typeof GraphQLScalarType;
-}
+    export const GraphQLJSON: GraphQLScalarType;
+    export const GraphQLJSONObject: GraphQLScalarType;
+}