verify Fixed play1siena's json test

play1siena/app/controllers/Application.java

@@ -24,7 +24,7 @@ public class Application extends Controller {
 
 	public static void json() {
 		Map<String, String> result = new HashMap<String, String>();
-		result.put("message", "Hello World!");
+		result.put("message", "Hello, World!");
 		renderJSON(result);
 	}