fixed typo

Author: gionniboy

bin/v-delete-mail-domain-dkim

@@ -61,7 +61,7 @@ fi
 
 # Updatoing config
 update_object_value 'mail' 'DOMAIN' "$domain" '$DKIM' 'no'
-decrease_user_value "$user" '$U_MAIL_DKMI'
+decrease_user_value "$user" '$U_MAIL_DKIM'
 
 # Logging
 log_history "disabled DKIM support on $domain"