fix: update community link and switch to HashRouter for routing

Author: Tkemper2

web/index.html

@@ -121,7 +121,7 @@ <h2>What's Next?</h2>
     </ol>
 
     <a href="./viz/">Go to viz page</a>
-    <a href="./community/">Go to community (React)</a>
+    <a href="./community/#/">Community</a>
 
 </body>
 </html>

web/src/main.jsx

@@ -1,17 +1,17 @@
 import React from "react";
 import ReactDOM from "react-dom/client";
-import { BrowserRouter, Routes, Route } from "react-router-dom";
+import { HashRouter, Routes, Route } from "react-router-dom";
 import Intro from "./pages/Intro.jsx";
 import User_community from "./pages/User_community.jsx";
 import "./index.css";
 
 ReactDOM.createRoot(document.getElementById("root")).render(
   <React.StrictMode>
-    <BrowserRouter>
+    <HashRouter>
       <Routes>
         <Route path="/" element={<Intro />} />
         <Route path="/User_community" element={<User_community />} />
       </Routes>
-    </BrowserRouter>
+    </HashRouter>
   </React.StrictMode>
 );