update template - add blank line after endif

templates/main.cf.j2

@@ -6,6 +6,7 @@ compatibility_level= {{ postfix_compatibility_level }}
 
 myorigin = /etc/mailname
 mydestination = $myhostname, localhost.$mydomain, localhost, {% if postfix_hostname is defined %}{{ postfix_hostname }}{% else %}{{ ansible_hostname }}{% endif %}
+
 mynetworks_style = {{ postfix_mynetworks_style }}
 mynetworks = {{ postfix_mynetworks | join(' ') }}
 inet_interfaces = {{ postfix_inet_interfaces }}