[libc-commits] [libc] Rename `libc/hdrgen/yaml/` to `libc/hdrgen/spec/` (PR #120931)

[Joseph Huber via libc-commits]

https://github.com/jhuber6 approved this pull request.

I think this is fine, but would like someone else from the libc project to chime in. Might be awhile because of the holidays.

https://github.com/llvm/llvm-project/pull/120931