chore(docs): Update readme links to gen2 (#6557)

Update readme links to gen2

Author: jvh-aws

README.md

@@ -23,7 +23,7 @@ Please use the latest version (Gen 2) of Amplify Flutter. If you are currently u
 | [**Storage**](https://docs.amplify.aws/lib/storage/getting-started/q/platform/flutter)                  | <a href="https://pub.dev/packages/amplify_storage_s3" target="_blank"> <img src="https://img.shields.io/pub/v/amplify_storage_s3.svg"> </a>                                                   | Provides a simple mechanism for managing user content for your app in public, protected or private storage buckets with Amazon S3.                                                                                                                                                                         |
 | [**DataStore**](https://docs.amplify.aws/lib/datastore/getting-started/q/platform/flutter)              | <a href="https://pub.dev/packages/amplify_datastore/versions/1.1.0-supports-only-mobile" target="_blank"> <img src="https://img.shields.io/pub/v/amplify_datastore?include_prereleases"> </a> | A programming model for leveraging shared and distributed data without writing additional code for offline and online scenarios, which makes working with distributed, cross-user data just as simple as working with local-only data.                                                                     |
 | [**API (REST)**](https://docs.amplify.aws/lib/restapi/getting-started/q/platform/flutter)               | <a href="https://pub.dev/packages/amplify_api" target="_blank"> <img src="https://img.shields.io/pub/v/amplify_api.svg"> </a>                                                                 | Provides a simple solution when making HTTP requests. It provides an automatic, lightweight signing process which complies with AWS Signature Version 4.                                                                                                                                                   |
-| [**API (GraphQL)**](https://docs.amplify.aws/lib/graphqlapi/getting-started/q/platform/flutter)         | <a href="https://pub.dev/packages/amplify_api" target="_blank"> <img src="https://img.shields.io/pub/v/amplify_api.svg"> </a>                                                                 | Interact with your GraphQL server or AWS AppSync API with an easy-to-use & configured GraphQL client.                                                                                                                                                                                                      |
+| [**API (GraphQL)**](https://docs.amplify.aws/flutter/build-a-backend/data/)         | <a href="https://pub.dev/packages/amplify_api" target="_blank"> <img src="https://img.shields.io/pub/v/amplify_api.svg"> </a>                                                                 | Interact with your GraphQL server or AWS AppSync API with an easy-to-use & configured GraphQL client.                                                                                                                                                                                                      |
 | [**Notifications**](https://docs.amplify.aws/lib/push-notifications/getting-started/q/platform/flutter) | <a href="https://pub.dev/packages/amplify_push_notifications_pinpoint" target="_blank"> <img src="https://img.shields.io/pub/v/amplify_push_notifications_pinpoint.svg"> </a>                 | Trigger push notifications to your app and record metrics in Pinpoint when users receive or open notifications.                                                                                                                                                                                            |
 | [**Authenticator**](https://ui.docs.amplify.aws/flutter/connected-components/authenticator)             | <a href="https://pub.dev/packages/amplify_authenticator" target="_blank"> <img src="https://img.shields.io/pub/v/amplify_authenticator.svg"> </a>                                             | The Amplify Flutter Authenticator simplifies the process of authenticating users by providing a fully-customizable flow which just works. Simply wrap your app's authenticated route in an Authenticator component and the process of authenticating users and managing login sessions is handled for you. |