Fix a typo that changed the declaration

Author: AbandonedCart

deploy/certbot/bootstrap.sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 set -eu
 
-DEFAULT_DOMAINS="amiiboapi.org,www.amiiboapi.org"
+DEFAULT_DOMAIN="amiiboapi.org,www.amiiboapi.org"
 CERTBOT_DOMAIN="${CERTBOT_DOMAIN:-$DEFAULT_DOMAIN}"
 CERTBOT_EMAIL="${CERTBOT_EMAIL:-ssl-admin@amiiboapi.org}"
 CERTBOT_WEBROOT="${CERTBOT_WEBROOT:-/var/www/certbot}"