docs(tutorial/step_05): fix url-based links refs to AUTO module

Closes #6387

Author: Stéphane Reynaud

docs/content/tutorial/step_05.ngdoc

@@ -8,7 +8,7 @@
 
 Enough of building an app with three phones in a hard-coded dataset! Let's fetch a larger dataset
 from our server using one of Angular's built-in {@link guide/dev_guide.services services} called {@link
-api/ng.$http $http}. We will use Angular's {@link guide/di dependency
+ng.$http $http}. We will use Angular's {@link guide/di dependency
 injection (DI)} to provide the service to the `PhoneListCtrl` controller.