[libc-commits] [libc] [libc][docs] add sys/wait to documentation and include related functi… (PR #122598)

[Nick Desaulniers via libc-commits]

https://github.com/nickdesaulniers approved this pull request.

thanks for the patch! :trinidad_tobago: :b: 

https://github.com/llvm/llvm-project/pull/122598