message: docs: add warning about lack of testing used by TOH
  Adds a short note about how the .spec.ts testing files aren't used or modified in this tutorial.
  Fixes
  PR Close
diff: @@ -89,8 +89,7 @@ They display data on the screen, listen for user input, and take action based on
  ## Make changes to the application
  Open the project in your favorite editor or IDE. Navigate to the `src/app` directory to edit the starter application.
  -
  -Note that the implementation of the shell `AppComponent` distributed over three files:
  +In the IDE, locate these files, which make up the `AppComponent` that you just created:
  | Files | Details |
  |:--- |:--- |
  @@ -98,6 +97,17 @@ Note that the implementation of the shell `AppComponent` distributed over three
  | `app.component.html` | The component template, written in HTML. |
  | `app.component.css` | The component's private CSS styles. |
  +<div class="alert is-important">
  +
  +When you ran `ng new`, Angular created test specifications for your new application.
  +Making these changes, however, breaks your newly created specifications.
  +
  +That won't be a problem because Angular testing is outside the scope of this tutorial and won't be used.
  +
  +To learn more about testing with Angular, see [Testing](guide/testing).
  +
  +</div>
  +
  ### Change the application title
  Open the `app.component.ts` and change the `title` property value to 'Tour of Heroes'.
  