[hooks/notification] Fix indentation
Follow-up for changeset 1b8552265f3b "[hooks/notification] use a cnx not a
session"
#! /bin/sh -e#if [ "$1" = configure ]; then if which install-docs >/dev/null 2>&1; then install-docs -i /usr/share/doc-base/cubicweb-doc fifi#DEBHELPER#exit 0