Updated Debugging (markdown)

docs/content/config/troubleshooting/debugging.md

@@ -17,5 +17,6 @@ neither in the dovecot logs
 3. Make sure you set your hostname to 'mail' or whatever you specified in your docker-compose.yml file or else your FQDN will be wrong
 
 4. During setup, if you get errors trying to edit files inside of the container, you likely need to install vi:
+
     sudo su
     docker exec -it mail apt-get install -y vim