Updated FAQ and Tips (markdown)

docs/content/config/troubleshooting/faq.md

@@ -25,14 +25,16 @@ You should use a [data volume container](https://medium.com/@ramangupta/why-dock
 
 Assuming that you use `docker-compose` and a data volume container named `maildata`, you can backup your user mails like this:
 
-```docker run --rm -ti \
+```
+docker run --rm -ti \
   -v maildata:/var/mail \
   -v mailstate:/var/mail-state \
   -v /backup/mail:/backup \
   alpine:3.2 \
   tar cvzf /backup/mail-`date +%y%m%d-%H%M%S`.tgz /var/mail /var/mail-state
 
-find /backup/mail -type f -mtime +30 -exec rm -f {} \;```
+find /backup/mail -type f -mtime +30 -exec rm -f {} \;
+```
 
 ### What about `mail-state` folder?
 This folder consolidates all data generated by the server itself to persist when you upgrade.