Well your welcome to start translating TE 
You're joking, right?
Well, I have quite a bit of spare time but let's be honest, the german help was ~95% complete and has been totally wiped out by a team decision. You can't expect from someone to do the entire work (again)...
There have been several changes from the help that was distributed with SMF in the past, but it's not forbidden to open a language file and do a bit of copy&paste.
I would do it by myself, but not having any knowledge of many of the different languages I can't be sure of what I'm putting into the wiki...