Description of problem: Remove 'radosgw-admin zonegroup-map get' from 3.0 Object_gateway_guide as it is unrecognised argument and not supported.
See https://gitlab.cee.redhat.com/red-hat-ceph-storage-documentation/doc-Red_Hat_Ceph_Storage_3-Object_Gateway_Guide/commit/2373e279bb69bc97fd9a3128e6b9d8f69fd4ecd3 https://gitlab.cee.redhat.com/red-hat-ceph-storage-documentation/doc-Red_Hat_Ceph_Storage_3-Object_Gateway_Guide/commit/4f2bc816a26e509d02ce8860132303142956af0d