Fix charm-deployment-guide
Fix charm-deployment-guide

The https://docs.openstack.org/charm-deployment-guide/ directory has
been removed since it was wrong, update config for this. This repo
has only a deployment guide.

Change-Id: Ie5abfd614175fd69c344cf89e68b6967d1edd9f5

openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals