Update comment

backend/index.js

@@ -12,7 +12,7 @@ app.use(Loggerware);
 // Set up API routes
 app.use(APIRoutes);
 
-// Listen on port set in .env
+// Listen on port 5000
 app.listen(5000, () => {
     console.log('Server is listening on port 5000');
 });