[llvm] [NFC] Correct imprecise file location in the comment. (PR #115630)

[Mircea Trofin via llvm-commits]

mtrofin wrote:

Lgtm, but you also need to patch (copy) the corresponding file in compiler_rt. there should be a test failing otherwise, it checks the files are identical.

https://github.com/llvm/llvm-project/pull/115630