Fix css path in layout.html.twig

Author: Rodolfo Bandeira

Diff for: src/AppBundle/Resources/views/layout.html.twig

@@ -2,7 +2,7 @@
 
 {% block head %}
     <link rel="icon" sizes="16x16" href="{{ asset('favicon.ico') }}" />
-    <link rel="stylesheet" href="{{ asset('bundles/acmedemo/css/demo.css') }}" />
+    <link rel="stylesheet" href="{{ asset('bundles/app/css/demo.css') }}" />
 {% endblock %}
 
 {% block title 'Demo Bundle' %}