Use of HTTP.DELETE is wrong in Tutorial

[fcalderon]

I'm submitting a ... (check one with "x")

[x] bug report
[ ] feature request
[ ] support request => Please do not submit support request here, instead see https://github.com/angular/angular/blob/master/CONTRIBUTING.md#question

Current behavior

In the Tutorial -> HTTP Docs, in the HTTP.DELETE section, the headers are passed the wrong way to the http.delete method:

  delete(hero: Hero) {
    let headers = new Headers();
    headers.append('Content-Type', 'application/json');
    let url = `${this.heroesUrl}/${hero.id}`;
    return this.http
               .delete(url, headers) // <- HERE
               .toPromise()
               .catch(this.handleError);
  }

Expected/desired behavior

  delete(hero: Hero) {
    let headers = new Headers();
    headers.append('Content-Type', 'application/json');
    let url = `${this.heroesUrl}/${hero.id}`;
    return this.http
               .delete(url, { headers : headers }) // <- HERE
               .toPromise()
               .catch(this.handleError);
  }

Note this issue was previously opened in: Angular

[chalin]

Good catch, thanks.
@thelgevold could you fix this?
/cc @wardbell @Foxandxss

[thelgevold]

@chalin I will take a look at this.
Thanks!