Add aaaa_record_present? to check results

Author: jriggins

lib/github-pages-health-check/domain.rb

@@ -89,7 +89,7 @@ class Domain < Checkable
 
       HASH_METHODS = %i[
         host uri nameservers dns_resolves? proxied? cloudflare_ip?
-        fastly_ip? old_ip_address? a_record? aaaa_record? cname_record?
+        fastly_ip? old_ip_address? a_record? aaaa_record? aaaa_record_present? cname_record?
         mx_records_present? valid_domain? apex_domain? should_be_a_record?
         cname_to_github_user_domain? cname_to_pages_dot_github_dot_com?
         cname_to_fastly? pointed_to_github_pages_ip?