In #24159, the title field of `docker node ls` has been changed from NAME to HOSTNAME. However, in the docs the NAMEs are still used for the output of `docker node ls`. This fix updates docs so that NAME field is changed to HOSTNAME for all `docker node ls`. This fix is related to #24159 and #24090. Signed-off-by: Yong Tang <yong.tang.github@outlook.com> Upstream-commit: 668b8a998f5ebbe66c7376c432a5fd87208add73 Component: engine