Kiosk auto-app rename history

auto.app was renamed to kiosk.app.

The active documentation is the kiosk app runner, and the executable source URL is:

wget -qO- https://devs-guide.github.io/debian/setup/cli/kiosk.app.sh | bash

The old docs/auto.app.md note remains in the repository as retained source material; its local absolute link is not used in public documentation.