Link to deprecation

Author: wagenet

packages/@ember/routing/route.ts

@@ -1153,7 +1153,8 @@ class Route<Model = unknown> extends EmberObject.extend(ActionHandler, Evented)
     handled by the `error` hook on `Route`.
 
     Note that the legacy behavior of automatically defining a model
-    hook when a dynamic segment ending in `_id` is present is deprecated.
+    hook when a dynamic segment ending in `_id` is present is
+    [deprecated](https://deprecations.emberjs.com/v5.x#toc_deprecate-implicit-route-model).
     You should explicitly define a model hook whenever any segments are
     present.