the "docker swarm leave" command description
mentioned that the command can only be used
for workers, however, the command can also
be used for managers (using the `-f` / `--force`
option).
this patch removes the "(workers only)" part
of the command description.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
(cherry picked from commit f89eee5d9d)
Signed-off-by: Victor Vieux <vieux@docker.com>
5391ce8ffa