Small update

Author: pedrosousa

src/content/docs/rules/transform/request-header-modification/index.mdx

@@ -56,7 +56,7 @@ You can create a request header transform rule [in the dashboard](/rules/transfo
 
 - You cannot modify the value of any header commonly used to identify the website visitor's IP address or initial protocol, such as `x-forwarded-for`, `true-client-ip`, `x-real-ip`, or `x-forwarded-proto`.
 
-- While you can remove the `x-forwarded-for` header, it will be added back by Cloudflare's cache service, and this header will reach your origin server. If you remove the `x-forwarded-for` header and the request is handled by Cloudflare Workers — which [run before the cache](/workers/reference/how-the-cache-works/) — the `x-forwarded-for` request header will be absent.
+- While you can remove the `x-forwarded-for` header, it will be added back by Cloudflare's cache service (with a different value), and this header will reach your origin server. If you remove the `x-forwarded-for` header and the request is handled by Cloudflare Workers — which [run before the cache](/workers/reference/how-the-cache-works/) — the `x-forwarded-for` request header will be absent.
 
 - You cannot set or modify the value of `cookie` HTTP request headers, but you can remove these headers. Configuring a rule that removes the `cookie` HTTP request header will remove all `cookie` headers in matching requests.