message: docs(aio): fix numbering of the three ways to access hero details
  Fixes
  PR Close
diff: @@ -275,6 +275,7 @@ The `HeroDetailsComponent` displays details of a selected hero.
  At the moment the `HeroDetailsComponent` is only visible at the bottom of the `HeroesComponent`
  The user should be able to get to these details in three ways.
  +
  1. By clicking a hero in the dashboard.
  1. By clicking a hero in the heroes list.
  1. By pasting a "deep link" URL into the browser address bar that identifies the hero to display.
  