Add guide for importing-inject-from-ember-service deprecation

Author: bertdeblock

content/ember/v5/importing-inject-from-ember-service.md

@@ -0,0 +1,20 @@
+---
+title: Importing `inject` from `@ember/service`
+until: 6.0.0
+since: 5.4.0
+displayId: importing-inject-from-ember-service
+---
+
+Importing `inject` from `@ember/service` is deprecated. Please import `service` instead.
+
+Example:
+
+```diff
+import { Route } from '@ember/routing/route';
+- import { inject as service } from '@ember/service';
++ import { service } from '@ember/service';
+
+export default class MyRoute extends Route {
+  @service store;
+}
+```