docs(cloudflare): Node middleware not supported (#135)

Author: vicb

pages/cloudflare/index.mdx

@@ -42,6 +42,7 @@ We will update the list as we progress towards releasing 1.0.
 - [x] [Static Site Generation (SSG)](https://nextjs.org/docs/app/building-your-application/rendering/server-components#static-rendering-default)
 - [x] [Server-Side Rendering (SSR)](https://nextjs.org/docs/app/building-your-application/rendering/server-components)
 - [x] [Middleware](https://nextjs.org/docs/app/building-your-application/routing/middleware)
+- [ ] [Node Middleware](https://nextjs.org/docs/app/building-your-application/routing/middleware#runtime) introduced in 15.2 are not yet supported
 - [x] [Image optimization](https://nextjs.org/docs/app/building-your-application/optimizing/images) (See [this guide](/cloudflare/howtos/image) to configure [Cloudfare Images](https://developers.cloudflare.com/images/))
 - [x] [Partial Prerendering (PPR)](https://nextjs.org/docs/app/building-your-application/rendering/partial-prerendering)
 - [x] [Pages Router](https://nextjs.org/docs/pages)