Replace 'APEX validation' terminology by DCV

Author: RebeccaTamachiro

src/content/docs/ssl/edge-certificates/universal-ssl/troubleshooting.mdx

@@ -17,7 +17,7 @@ To resolve timeout issues, try one or more of the following options:
 * Change the **Proxy status** of related DNS records to **DNS only** (gray-clouded) and wait at least a minute. Then, change the **Proxy status** back to **Proxied** (orange-clouded).
 * [Disable Universal SSL](/ssl/edge-certificates/universal-ssl/disable-universal-ssl/) and wait at least a minute. Then, re-enable Universal SSL.
 * Send a PATCH request to the [validation endpoint](/api/resources/ssl/subresources/verification/methods/edit/) using the same DCV method (API only). Please make sure that the `--data` field is not empty in your request.
-* Follow the [APEX validation method](/ssl/edge-certificates/changing-dcv-method/methods/#perform-dcv).
+* Review your [domain control validation (DCV)](/ssl/edge-certificates/changing-dcv-method/).
 
 Alternatively, you can use the [API to delete the certificate](/api/resources/ssl/subresources/certificate_packs/methods/delete/): it will then no longer appear in the list in the Cloudflare dashboard.