[HTTP status code] Update error-520.mdx (#25789)

Ray ID https://developers.cloudflare.com/fundamentals/reference/cloudflare-ray-id/

Author: nenizera

src/content/docs/support/troubleshooting/http-status-codes/cloudflare-5xx-errors/error-520.mdx

@@ -39,7 +39,7 @@ As a temporary workaround, you can set the affected DNS record to [DNS-only](/dn
 
 - If `520` errors continue after contacting your hosting provider or site administrator, provide the following information to [Cloudflare Support](/support/contacting-cloudflare-support/):
   - Full URL(s) of the resource requested when the error occurred.
-  - Cloudflare **cf-ray** from the `520` error message.
+  - Cloudflare [**cf-ray**](/fundamentals/reference/cloudflare-ray-id/) from the `520` error message.
   - Output from `http://<YOUR_DOMAIN>/cdn-cgi/trace`.
   - Two [HAR files](/support/troubleshooting/general-troubleshooting/gathering-information-for-troubleshooting-sites/#generate-a-har-file):
     - One with Cloudflare enabled on your website.