Fix issues reported by ansible-lint

_ansible/roles/acme-dns/vars/main.yml

@@ -1,5 +1,6 @@
+---
 svc:
-  domain: "acme.serguzim.me"
+  domain: acme.serguzim.me
   name: acme-dns
   port: 80
   nsadmin: "{{ admin_email | regex_replace('@', '.') }}"
@@ -12,7 +13,6 @@ svc:
     pass: "{{ vault_acmedns.db.pass }}"
     db: acme_dns
 
-
 compose:
   watchtower: true
   monitoring: true
@@ -24,4 +24,4 @@ compose:
       app:
         ports:
           - "53:53"
-          - "53:53/udp"
+          - 53:53/udp