fixed typo in url in file path in ons-demo/js/model.js
diff --git a/web/ons-demo/js/model.js b/web/ons-demo/js/model.js
index 81d5c27..6577fea 100644
--- a/web/ons-demo/js/model.js
+++ b/web/ons-demo/js/model.js
@@ -54,7 +54,7 @@
 	switches: '/wm/core/topology/switches/all/json',
 	flows: '/wm/flow/getall/json',
 	activeControllers: '/wm/registry/controllers/json',
-	controllers: '/data/controllers.json',
+	controllers: 'data/controllers.json',
 	mapping: '/wm/registry/switches/json',
 	configuration: 'data/configuration.json'
 }
@@ -118,4 +118,4 @@
 			alert(JSON.stringify(err));
 		}
 	});
-}
\ No newline at end of file
+}