[3.14] gh-127604: Docs: Include a C stack in the `faulthandler` example (GH-136081) (GH-136102)

* gh-127604: Docs: Include a C stack in the `faulthandler` example (GH-136081)
(cherry picked from commit 39478479146f1f4188119a0e7ffdcdc7b6016bd7)

Co-authored-by: Peter Bierma <zintensitydev@gmail.com>