Push Token not received on each app launch following Amplify documentation

[richstimson]

Describe the content issue:
Missing content - this page should include additional AppDelegate code to ensure that a push token is received on every app launch as intended.

- (void)applicationDidFinishLaunching:(UIApplication *)app {

// ....

   // Register for remote notifications.
    [[UIApplication sharedApplication] registerForRemoteNotifications];
}

or at least a note to point to this page:
https://developer.apple.com/library/archive/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/HandlingRemoteNotifications.html

URL page where content issue is:
https://docs.amplify.aws/gen1/react-native/build-a-backend/push-notifications/set-up-push-notifications/#update-your-application-delegate