fix typo and indentation problem

roles/dovecot/tasks/main.yml

@@ -10,16 +10,16 @@
       - dovecot-lmtpd
       - dovecot-ldap
       - dovecot-pop3d
-    register: apt_result
+  register: apt_result
-    retries: 3
+  retries: 3
-    until: apt_result is succeeded
+  until: apt_result is succeeded
 
 # Create the vmail user with UID and GID 5000
 - name: Create vmail user
   user:
     name: vmail
     uid: 5000
-    gid: 5000
+    group: 5000
     home: /var/vmail
 
 # Create mail user seive directory with right ownernship and rights