Remove DigiCert CAA from wpengine troubleshooting

Author: RebeccaTamachiro

src/content/docs/cloudflare-for-platforms/cloudflare-for-saas/saas-customers/provider-guides/wpengine.mdx

@@ -52,6 +52,6 @@ If you cannot activate your domain using [proxied DNS records](/dns/manage-dns-r
 
 If you encounter SSL errors, check if you have a `CAA` record.
 
-If you do have a `CAA` record, check that it permits SSL certificates to be issued by `digicert.com` and `letsencrypt.org`.
+If you do have a `CAA` record, check that it permits SSL certificates to be issued by `letsencrypt.org`.
 
 For more details, refer to [CAA records](/ssl/edge-certificates/troubleshooting/caa-records/#what-caa-records-are-added-by-cloudflare).