fix(graphql-model-transformer): add custom queries link

Author: sundersc

src/pages/gen1/[platform]/build-a-backend/graphqlapi/data-modeling/index.mdx

@@ -1143,7 +1143,9 @@ Declaring custom Query, Mutation, and/or Subscription with the same field names
 </Callout>
 
 <Callout info>
-Amplify directives are not supported on the extended type definitions.
+Amplify directives are currently not supported on the extended type definitions. You can use the extend keyword to organize custom queries, mutations, and subscriptions that use [custom resolvers](https://docs.amplify.aws/gen1/react/build-a-backend/graphqlapi/best-practice/batch-put-custom-resolver/).
+
+For the latest updates and potential future enhancements, please track the ongoing discussion in [GitHub Issue #3036](https://github.com/aws-amplify/amplify-category-api/issues/3036).
 </Callout>
 
 ## How it works