Add restart peertube info in upgrade doc

support/doc/production.md

@@ -281,6 +281,7 @@ The password it asks is PeerTube's database user password.
 
 ```
 $ cd /var/www/peertube/peertube-latest/scripts && sudo -H -u peertube ./upgrade.sh
+$ sudo systemctl restart peertube # Or use your OS command to restart PeerTube if you don't use systemd
 ```
 
 #### Manually