message: docs: update docs to reflect the changes in RxJS 6
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diff: @@ -4,7 +4,7 @@ import { Observable, of } from 'rxjs';
  // #docregion observer
  // Create simple observable that emits three values
  -const myObservable = Observable.of(1, 2, 3);
  +const myObservable = of(1, 2, 3);
  // Create observer object
  const myObserver = {
  