The "show-machines" subcommand is not mentioned in the docs; add it.
[AG: fix conflicts]
(From yocto-docs rev: 09bbdc6bc5f9ae77f120185d1324f1166ac1f9d5)
Signed-off-by: Robert P. J. Day <Crpjday@crashcourse.ca>
Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
(cherry picked from commit b4320cdc4df08c59a24d5247b3895dd602554fa0)
Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>