404 from github pages

[pico-bolero]

Links like https://darktable-org.github.io/luadocs/lua.scripts.manual/scripts/official/check_for_updates are currently reporting a 404 from the lua-scripts README.md.

[wpferguson]

The README.md needs lots of love. I'll update it. In the meantime you can find the docs at https://docs.darktable.org/lua/stable