update frontend

templates/index.html

@@ -5,6 +5,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Blog RAG Chat</title>
     <link rel="stylesheet" href="/static/style.css">
+    <script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"></script>
 </head>
 <body>
     <div class="app">