message: docs(your-first-module): add gql import
diff: @@ -13,6 +13,7 @@ Here is a quick example:
  `modules/my-first-module/index.ts`
  ```typescript
  import { GraphQLModule } from '@graphql-modules/core';
  +import gql from "graphql-tag";
  export const MyFirstModule = new GraphQLModule({
  typeDefs: gql`
  