I have been a big fan of ScummVM since it started back in 2002, and I've always wanted to help out. I have submitted a couple of patches, but I'm not skilled enough in programming to help out in any big way. I really love to research and write though, so this is right up my alley.
Thanks for doing what you do, ScummVM Team, and I hope that I can help alleviate some of the work on the documentation front so that you can keep doing what you do best. :)