[3.12] Tutorial: Clarify 'nonzero exit status' in the appendix (GH-112039) (#113999)

Tutorial: Clarify 'nonzero exit status' in the appendix (GH-112039)
(cherry picked from commit 32f3684b8f18d757945eee67a697cb4a95c697db)

Co-authored-by: Andrew Zipperer <47086307+zipperer@users.noreply.github.com>