docs(toh): fix spelling of ActivateRoute to ActivatedRoute (#2400)

* fixed spelling of ActivateRoute to ActivatedRoute

* dont do cache

Author: johnpapa

public/docs/ts/latest/tutorial/toh-pt5.jade

@@ -536,7 +536,7 @@ block route-params
 block ngOnInit
   :marked
     Inside the `ngOnInit` lifecycle hook, we use the `params` observable to
-    extract the `id` parameter value from the `ActivateRoute` service
+    extract the `id` parameter value from the `ActivatedRoute` service
     and use the `HeroService` to fetch the hero with that `id`.
 
 +makeExcerpt('app/hero-detail.component.ts', 'ngOnInit')