message: docs: fix http example to show actual message in console
  Previously, the error message in the console would print `[object Object]`
  and not the actual error message. With this change, the error message is
  printed in the console.
  PR Close
diff: @@ -79,8 +79,7 @@ export class ConfigService {
  // The backend returned an unsuccessful response code.
  // The response body may contain clues as to what went wrong.
  console.error(
  - `Backend returned code ${error.status}, ` +
  - `body was: ${error.error}`);
  + `Backend returned code ${error.status}, body was: `, error.error);
  }
  // Return an observable with a user-facing error message.
  return throwError(
  