Fix trivial typo in shebang example (GH-101385)

The example was showing the current version, but should be pinned to 3.7 to match the example command.
(cherry picked from commit 666c0840dcac9941fa41ec619fef8d45cd849a0b)

Co-authored-by: socal-nerdtastic <37753609+socal-nerdtastic@users.noreply.github.com>