Revert " 解决路径添加/gemini-viewer-examples/导致示例页面打不开问题"

This reverts commit 47202b6698.

src/index.tsx

@@ -10,7 +10,7 @@ const root = ReactDOM.createRoot(
 );
 root.render(
   <React.StrictMode>
-      <HashRouter>
+      <HashRouter basename="/">
             <App />
       </HashRouter>
   </React.StrictMode>

src/pages/demo/index.tsx

@@ -8,7 +8,7 @@ function Demo() {
     const [data, setData] = useState<MenusProp[]>([]);
 
     useEffect(() => {
-        fetch("./config.json").then(data => data.json()).then((data) => {
+        fetch("../gemini-viewer-examples/config.json").then(data => data.json()).then((data) => {
             setData(data);
         });
     }, [])