Make it readable the cli command for the status check of `fwutil update all`

[sujinmkang]

Changed the "fwutil show update status" command to fwutil show update-all-status

Current cli command fwutil show update status for the status check of fwutil update all is confusing with fwutil show updates <image path option and image path> To make it readable, suggest to change the "fwutil show update status" command to fwutil show update-all-status