Fix typo with log_config in zuul.conf-sample

Change-Id: Ieda682233843b4500e8d59d91ac24b36dfd172dd
Signed-off-by: Paul Belanger <paul.belanger@polybeacon.com>
Reviewed-on: https://review.openstack.org/14433
Approved: James E. Blair <corvus@inaugust.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins
1 file changed