refactor: adding this as an example

Author: cskiwi

libs/frontend/root/src/root/root.component.html

@@ -1,5 +1,5 @@
 <h1>Welcome app!</h1>
 
-<pre>{{ movie() | json }}</pre>
+<pre>{{ testApiCall() | json }}</pre>
 
 <router-outlet></router-outlet>

libs/frontend/root/src/root/root.component.ts

@@ -13,7 +13,7 @@ import { derivedAsync } from 'ngxtension/derived-async';
 })
 export class RootComponent {
   private readonly httpClient = inject(HttpClient);
-  movie = derivedAsync(() =>
+  testApiCall = derivedAsync(() =>
     this.httpClient.get(`http://localhost:3000/api/backend-test`),
   );
 }