Wrong in-memory API url in tutorial/toh-pt6.html

[johncrim]

In https://angular.io/docs/ts/latest/tutorial/toh-pt6.html, under section "Heroes and HTTP", 2nd code example uses the wrong API url. The code is:

  private heroesUrl = 'app/heroes';  // URL to web api

and it should be:

  private heroesUrl = 'api/heroes';  // URL to web api

Also - at the end of that section, it says:

Refresh the browser, and the hero data should be successfully loaded from the mock server.

This is incorrect, because the HeroService.handleError() fn has not been defined.

[wardbell]

While it should be 'api/', in practice it doesn't matter because the in-memory-web-api actually doesn't care. Maybe it should, but it doesn't. Of course it would matter talking to a real web api where the base address would be 'api/',

You're right also that we didn't show handleError.

Both problems fixed by PR #2899

[MickeySegal]

At angular/angular#18869 I suggested making the documentation more clear on this and the wider issue. It is unclear whether that will be done but at least it makes it easier to find this information by searching.