Because dan200 does not seem to be working on ComputerCraft anymore, I wanted to make a backup of the wiki if it goes down.
You mean like this?
https://web.archive.org/web/20171015172811/http://computercraft.info:80/wiki/Main_Page
ah ok
there is also the CC:T wiki: https://wiki.computercraft.cc/Main_Page
it will diverge from Dan200's CC overtime (and already has significantly) but most things should still apply
The old wiki has not allowed new user registrations since 2014, so it can only be maintained by a shrinking list of veterans - its current contents are likely not up-to-date even with the original CC branch, and so it is probably not worth archiving anyway, except as a curio.