runscript: clarify the message wrt scheduling
runscript: clarify the message wrt scheduling

The message about a service being scheduled to start was confusing to
some of our users; I was told this wording is more clear.

X-Gentoo-Bug: 493070
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=493070

dwfreed/openrc,dwfreed/openrc,OpenRC/openrc,dwfreed/openrc,williamh/openrc,williamh/openrc,OpenRC/openrc,williamh/openrc,OpenRC/openrc