autohelp: fix a typo
autohelp: fix a typo

This adds back the missing keystone database settings, and most likely
some other settings.

Change-Id: Idd0c327a6e8a95bc800a9abd695ef7a277d52f2f

openstack/openstack-doc-tools,openstack/openstack-doc-tools,savinash47/openstack-doc-tools,savinash47/openstack-doc-tools,savinash47/openstack-doc-tools