Documentation: document functions `args_os`, `set_utility_is_second_arg`

[sylvestre]

Some functions aren't documented here:
https://uutils.github.io/dev/uucore/index.html#functions

[allaboutevemirolive]

Error 404: File not found

[tertsdiepraam]

You can see it on docs.rs. I should get these docs back up 😅

[Its-Just-Nans]

https://docs.rs/uucore/latest/uucore/fn.args_os.html
https://docs.rs/uucore/latest/uucore/fn.get_utility_is_second_arg.html
https://docs.rs/uucore/latest/uucore/fn.set_utility_is_second_arg.html

[Its-Just-Nans]

I fix this can be closed ?
Or there is something to me done ?

[sylvestre]

I think we are good, thanks