admin/event-notifications: update service name

It should be ovirt-engine-notifier not engine-notifierd

Signed-off-by: May <sirhuntthepure@users.noreply.github.com>
admin: fix id naming in chapter 15 and 16

Signed-off-by: May <sirhuntthepure@users.noreply.github.com>
admin/users-and-roles: chapter 14 done

Signed-off-by: May <sirhuntthepure@users.noreply.github.com>
move list out of para tag

It looks better

Signed-off-by: May <sirhuntthepure@users.noreply.github.com>