[BUG] IBM Cloud CLI command cluster master update gives incorrect update info.

[donovat]

When performing an update on the cluster master nodes using the following commands, the help message recommends using a particular command to perform the update to the worker nodes. However this command is incorrect, and suggests options that are no longer supported.
the commands is:

ic ks cluster master update -c cimf-staging --version=4.11
During the update, you cannot access or change the cluster. Worker nodes, apps, and resources that have been deployed by the user are not modified and will continue to run.
You might need to change your YAML files for future deployments. Review the docs for details: 'https://ibm.biz/iks-versions'.
Are you sure you want to update your Kubernetes API server cimf-staging to 4.11? [y/N]> y
Updating cluster cimf-staging...
OK
To update to 4.11 version, run 'ibmcloud ks worker update --cluster cimf-staging --workers <worker1 ID>[,<worker2 ID>,...]'. Review and make any required version changes before you update: 'https://ibm.biz/upworker'

The incorrect command is:

To update to 4.11 version, run 'ibmcloud ks worker update --cluster cimf-staging --workers <worker1 ID>[,<worker2 ID>,...]'. Review and make any required version changes before you update: 'https://ibm.biz/upworker'

--workers is not a valid option on the worker update command.