[9.x] Add an example to the class aliases (#5846)

* Add an example to the class aliases

* Update app.php

Co-authored-by: Taylor Otwell <taylor@laravel.com>

config/app.php

@@ -191,7 +191,7 @@
     */
 
     'aliases' => Facade::defaultAliases()->merge([
-        // ...
+        // 'ExampleClass' => App\Example\ExampleClass::class,
     ])->toArray(),
 
 ];