[llvm] [doc] Add llvm --error-display to dwarfdump documentation (PR #110922)

[Kevin Frei via llvm-commits]

kevinfrei wrote:

My coworkers can't add me, either, either. I think it's because I've just not bothered getting commit privileges.

The change looks correct. Thanks for doing this. Hopefully someone else (@clayborg or @dwblaikie ?) can approve the diff.

https://github.com/llvm/llvm-project/pull/110922