Update index.mdx

Author: zeinjaber

src/content/docs/support/troubleshooting/http-status-codes/4xx-client-error/index.mdx

@@ -27,7 +27,7 @@ For a complete description of this error refer to the [Error 401](/support/troub
 
 ## 402 Payment Required
 
-The `402 Payment Required` status code is reserved for future use and is not yet implemented according to the standards outlined in [RFC 7231](https://tools.ietf.org/html/rfc7231).
+This status is used in responses when [AI Crawl Control](https://developers.cloudflare.com/ai-crawl-control/features/manage-ai-crawlers/#edit-the-response-code) blocks access.
 
 ## 403 Forbidden