chore: fix vercel 404 (#5212)

docs/vercel.json

@@ -1,8 +1,9 @@
 {
+    "cleanUrls": true,
     "rewrites": [
         { "source": "/docs/:match*", "destination": "/:match*" }
     ],
     "redirects": [
         { "source": "/", "destination": "/docs" }
     ]
-}
+}