Rename browser demo mount path from /demo to /voice-demo.

Co-authored-by: Cursor <cursoragent@cursor.com>

examples/webpage/README.md

@@ -51,7 +51,7 @@ examples/webpage/
 2. Open the demo page served by the same process:
 
    ```text
-   http://127.0.0.1:8000/demo/
+   http://127.0.0.1:8000/voice-demo/
    ```
 
    The default websocket URL is derived from the page host
@@ -63,7 +63,7 @@ examples/webpage/
    ```json
    "server": {
      "serve_webpage": true,
-     "webpage_mount": "/demo"
+     "webpage_mount": "/voice-demo"
    }
    ```