[cli-ref] Update python-novaclient to 4.1.0
[cli-ref] Update python-novaclient to 4.1.0

Updating document to remova a space between
'image- show' in 'glance image-show' under
the nova boot section.

Change-Id: I65761ac2a0dbfe55c3ef65540ee7e5f96da97ed2
Closes-Bug: #1599066

openstack/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,AlekhyaMallina-Vedams/openstack-manuals,openstack/openstack-manuals