Changed "reboot" to "power off" in poweroff.target description. It was most likely copied and pasted from the reboot.target below, compare with e.g. halt.target
<para>A special target unit for shutting down and powering
off the system.</para>
- <para>Applications wanting to reboot the system should not start this unit
+ <para>Applications wanting to power off the system should not start this unit
directly, but should instead execute <command>systemctl poweroff</command>
(possibly with the <option>--no-block</option> option) or call
<citerefentry><refentrytitle>systemd-logind</refentrytitle><manvolnum>8</manvolnum></citerefentry>'s