[llvm] [llvm-readobj] Fixes malformed json on JSON printed corefiles (PR #92835)

[James Henderson via llvm-commits]

https://github.com/jh7370 approved this pull request.

In the PR description:
> NT_FILE, note use

I think "note" here should be "now".

LGTM, with that and the other inline comment.

https://github.com/llvm/llvm-project/pull/92835