[SSL] Review instructions and add delete option to USSL troubleshooting (#23480)

* [SSL] Update troubleshooting.mdx

CUSTESC-51418

* Fix capitalization

* Replace 'APEX validation' terminology by DCV

* Separate delete instructions from timed out section

* Link out sooner to DCV page and reword last bullet

---------

Co-authored-by: Rebecca Tamachiro <[email protected]>
Co-authored-by: Rebecca Tamachiro <[email protected]>

Author: ngayerie

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

@@ -8,6 +8,7 @@ head:
     content: Troubleshooting Universal SSL
 description: Review how to troubleshoot issues such as certificate timeouts when using Cloudflare Universal SSL.
 ---
+
 ## Resolve a timed out state
 
 If a certificate issuance times out, Cloudflare tells you where in the chain of issuance the timeout occurred: Initializing, Validation, Issuance, Deployment, or Deletion.
@@ -16,8 +17,12 @@ 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).
+* Send a PATCH request to the [validation endpoint](/api/resources/ssl/subresources/verification/methods/edit/) using the same [DCV method](/ssl/edge-certificates/changing-dcv-method/) (API only). Make sure that the `--data` field is not empty in your request.
+* Review your domain control validation (DCV). Changing the DCV method will restart certificate issuance.
+
+## Delete certificates
+
+You can [use the API](/api/resources/ssl/subresources/certificate_packs/methods/delete/) to delete certificates that you no longer want listed on the Cloudflare dashboard.
 
 ## Other issues