[libc-commits] [libc] [libc][docs] start documenting c23 support (PR #81933)

[Nick Desaulniers via libc-commits]

nickdesaulniers wrote:

> A better version is here: https://drive.google.com/file/d/12kNvH0aYJhe3ZPmBKH_Nk5maTfxH2lJv/view

Ah, N3220! It's like finding a shiny pokemon! (and is an upgrade from referring to n3096)! I think this was the password protected one? Thanks!

https://github.com/llvm/llvm-project/pull/81933