docs: update Cloudflare Pages deployment settings (#10459)

Author: erxclau

documentation/docs/25-build-and-deploy/60-adapter-cloudflare.md

@@ -53,13 +53,9 @@ Please follow the [Get Started Guide](https://developers.cloudflare.com/pages/ge
 
 When configuring your project settings, you must use the following settings:
 
-- **Framework preset** – None
+- **Framework preset** – SvelteKit
 - **Build command** – `npm run build` or `vite build`
 - **Build output directory** – `.svelte-kit/cloudflare`
-- **Environment variables**
-	- `NODE_VERSION`: `16`
-
-> You need to add a `NODE_VERSION` environment variable to both the "production" and "preview" environments. You can add this during project setup or later in the Pages project settings. SvelteKit requires Node `16.14` or later, so you should use `16` as the `NODE_VERSION` value.
 
 ## Bindings