docs: fix index.html.md causing 404 (#12241)

* docs: fix index.html.md causing 404

* update next.js

* test

* test

* test

* test

* fix revalidate

* test

* test

* test

* test

* test

* test

* test

* test

* clean up

www/apps/ui/next.config.js

@@ -4,6 +4,13 @@ const { withContentlayer } = require("next-contentlayer")
 const nextConfig = {
   basePath: process.env.NEXT_PUBLIC_BASE_PATH || "/ui",
   reactStrictMode: true,
+  outputFileTracingIncludes: {
+    "/md\\-content/\\[\\[\\.\\.\\.slug\\]\\]": [
+      "./src/content/docs/**/*.mdx", 
+      "./specs/**/*", 
+      "./examples/**/*"
+    ],
+  },
 }
 
 module.exports = withContentlayer(nextConfig)