Revert livechat test script address

packages/rocketchat-livechat/assets/demo.html

@@ -12,8 +12,7 @@
 		j.async = true;
 		j.src = '/packages/rocketchat_livechat/assets/rocket-livechat.js';
 		h.parentNode.insertBefore(j, h);
-	})(window, document, 'script', 'http://localhost:5000/livechat');
-	// })(window, document, 'script', '/livechat');
+	})(window, document, 'script', '/livechat');
 	</script>
 </head>