[SSL] Update CAA records on Pages troubleshooting (#19023)

* Add SSL.com to CAA records for Pages troubleshooting

* Remove redirect entry already covered by dynamic redirect

* Remove comodoca.com from Pages CAA troubleshooting

Author: RebeccaTamachiro

public/_redirects

@@ -1023,7 +1023,6 @@
 /ssl/reference/cipher-suites/matching-on-origin/ /ssl/origin-configuration/cipher-suites/#match-on-origin 301
 /ssl/reference/migration-guides/lets-encrypt-chain/ /ssl/reference/certificate-authorities/#lets-encrypt 301
 /ssl/reference/migration-guides/dcv-update/ /ssl/reference/migration-guides/ 301
-/ssl/reference/migration-guides/digicert-update/ /ssl/reference/migration-guides/ 301
 /ssl/reference/validation-backoff-schedule/ /ssl/edge-certificates/changing-dcv-method/validation-backoff-schedule/ 301
 /ssl/universal-ssl/changing-dcv-method/ /ssl/edge-certificates/changing-dcv-method/ 301
 /support/dns/how-to/certification-authority-authorization-caa-faq/ /ssl/edge-certificates/troubleshooting/caa-records/ 301

src/content/docs/pages/configuration/custom-domains.mdx

@@ -99,12 +99,12 @@ This can cause issues when adding a [custom domain](/pages/configuration/custom-
 To resolve this, add the necessary CAA records to allow Cloudflare to issue a certificate for your custom domain.
 
 ```
-example.com.            300     IN      CAA     0 issue "comodoca.com"
 example.com.            300     IN      CAA     0 issue "letsencrypt.org"
 example.com.            300     IN      CAA     0 issue "pki.goog; cansignhttpexchanges=yes"
-example.com.            300     IN      CAA     0 issuewild "comodoca.com"
+example.com.            300     IN      CAA     0 issue "ssl.com"
 example.com.            300     IN      CAA     0 issuewild "letsencrypt.org"
 example.com.            300     IN      CAA     0 issuewild "pki.goog; cansignhttpexchanges=yes"
+example.com.            300     IN      CAA     0 issuewild "ssl.com"
 ```
 
 Refer to the [Certification Authority Authorization (CAA) FAQ](/ssl/edge-certificates/troubleshooting/caa-records/) for more information.