message: docs(aio): fix swap value
  'http.get' has been swapped in for 'of'
  PR Close
diff: @@ -135,7 +135,7 @@ Convert that method to use `HttpClient`
  Refresh the browser. The hero data should successfully load from the
  mock server.
  -You've swapped `http.get` for `of` and the app keeps working without any other changes
  +You've swapped `of` for `http.get` and the app keeps working without any other changes
  because both functions return an `Observable<Hero[]>`.
  ### Http methods return one value
  