update index.html

public/game/monopoly/index.html

   <link rel="stylesheet" href="assets/css/mainStage.css">
   <link rel="stylesheet" href="assets/lib/slick/slick.css">
   <script>
-    if (window.location.host === 'declarepre.taiwanpay.com.tw' && window.location.pathname === '/game/monopoly/index.html') {
+    if (window.location.host === 'declarepre.taiwanpay.com.tw' && (window.location.pathname === '/game/monopoly/index.html' || window.location.pathname === '/game/monopoly/')) {
       window.location.href = "https://declarepre.taiwanpay.com.tw/game/monopoly/index_pre.html" + window.location.search;
     }
   </script>