verify Fixed express' json test

express/app.js

@@ -61,7 +61,7 @@ if (cluster.isMaster) {
   // Routes
 
   app.get('/json', function(req, res) {
-    res.send({ message: 'Hello World!' })
+    res.send({ message: 'Hello, World!' })
   });
   
   app.get('/mongoose', function(req, res) {