[notification] fix documentation
The doc say precommit, the code says postcommit. The code is right.
We also clarify the documentation of another related operation looking suspiciously
wrong but actually correct.
#! /bin/sh -e
if [ -x "/etc/init.d/cubicweb-ctl" ]; then
invoke-rc.d cubicweb-ctl restart || true
fi
#DEBHELPER#
exit 0