[networking-guide] corrected misspelling adv-config-tag file
[networking-guide] corrected misspelling adv-config-tag file

changed bandwith to bandwidth

Change-Id: I4351683fe423a722514f703976e25a85374f1953

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