message: docs(migration): mention util interfaces in migration import paths
diff: @@ -150,7 +150,7 @@ For JavaScript developers, the general rule is as follows:
  1. **rxjs:** Creation methods, types, schedulers and utilities
  ```ts
  -import { Observable, Subject, asapScheduler, pipe, of, from, interval, merge, fromEvent } from 'rxjs';
  +import { Observable, Subject, asapScheduler, pipe, of, from, interval, merge, fromEvent, SubscriptionLike, PartialObserver } from 'rxjs';
  ```
  2. **rxjs/operators**: All pipeable operators:
  