https://bugs.freedesktop.org/show_bug.cgi?id=60133
https://bugs.freedesktop.org/show_bug.cgi?id=55890 Fixed typos, serial comma, and removed "either" as there were more than two options. Also did an extra rename of "system-shutdown" to "systemd-shutdown" that was forgotten in commit 8bd3b8620c
8bd3b8620c