docs: add memory and swap memory usage examples
docs: add memory and swap memory usage examples

fix: https://github.com/docker/docker/issues/11629

Signed-off-by: Qiang Huang <488e06933c295c76472a67dbc6657ac40a756953@huawei.com>

Zebrilee/cli,docker/cli,e11137/cli,Zebrilee/cli,cpuguy83/cli,riyazdf/cli,docker/cli,thaJeztah/cli,dnephin/cli,ashfall/cli,redpanda/cli,ashfall/cli,thaJeztah/cli,allencloud/cli,riyazdf/cli,redpanda/cli,e11137/cli,allencloud/cli,cpuguy83/cli,dnephin/cli