Fix var-spacing issues reported by ansible-lint 6.1.0

group_vars/all/postfix.yml

 # This is overridden for the actual mail server which uses mail.archlinux.org.
-mail_domain: "{{inventory_hostname}}"
+mail_domain: "{{ inventory_hostname }}"
 
 # password used by postfix for relaying to a central smtp server
-postfix_relay_password: "{{vault_postfix_relay_password}}"
+postfix_relay_password: "{{ vault_postfix_relay_password }}"

roles/aurweb/defaults/main.yml

@@ -17,7 +17,7 @@ aurweb_db_host: 'localhost'
 aurweb_db_user: 'aur'
 
 aurweb_user: 'aur'
-aurweb_socket: '/run/php-fpm/{{aurweb_user}}.socket'
+aurweb_socket: '/run/php-fpm/{{ aurweb_user }}.socket'
 cgit_socket: '/run/uwsgi/cgit.sock'
 smartgit_socket: '/run/uwsgi/smartgit.sock'