message: docs: fix minor typo in hierarchical-dependency-injection.md
  Small Typo change
  renamed oh to or in
  PR Close
diff: @@ -736,7 +736,7 @@ The example application uses `@Optional()` so the application does not throw an
  The `<app-child>` currently provides the `AnimalService` in the `viewProviders` array with the value of dog <code>&#x1F436;</code>.
  Because the injector has only to look at the `ElementInjector` of the `<app-child>` for the `AnimalService`, it never sees the whale <code>&#x1F433;</code>.
  -As in the `FlowerService` example, if you add `@SkipSelf()` to the constructor for the `AnimalService`, the injector won't look in the `ElementInjector` oh the current `<app-child>` for the `AnimalService`.
  +As in the `FlowerService` example, if you add `@SkipSelf()` to the constructor for the `AnimalService`, the injector won't look in the `ElementInjector` or the current `<app-child>` for the `AnimalService`.
  <code-example format="typescript" language="typescript">
  