I have been using this plugin for a few years and i had copied the commands and posted them on my discord from umod.
I never got any reports that some commands were wrong. until today!
Maybe adjust it, it's not really necessary because people see it correctly in game, but for clarity!

In the description on umod it says
Clan Alliance Commands:
/clan ally invite <tag>
/clan ally withdraw <tag>
/clan ally accept <tag>
/clan ally reject <tag>
/clan ally revoke <tag>

This should be:
/ally invite <tag>
/ally withdraw <tag>
/ally accept <tag>
/ally reject <tag>
/ally revoke <tag>