1. cd /srv/paws
2. rm user-config.py user-fixes.py
3. cd pwb
4. nano user-config.py

This is my user-config.py file, you can edit in on your way:

# -*- coding: utf-8 -*-
mylang = 'sr'
family = 'wikipedia'
usernames['wikipedia']['sr'] = 'KizuleBot'
put_throttle = 0

and save it with Ctrl + x, type y and press enter.

For editing another wiki site, you can use -family:project -lang:code (replace project with wiki site which you want to edit, like Wikisource, Wiktionary and etc. replace code with the language code of wanted wiki, example: sr, ru and etc)

Best regards,