`oc sa get-token` command has been deprecated and one should use `oc create token` command instead.

However the documentation[1] for MTC is not updated with the same.
- [1] https://docs.openshift.com/container-platform/4.16/migration_toolkit_for_containers/advanced-migration-options-mtc.html#:~:text=oc%20sa%20get%2Dtoken%20migration%2Dcontroller%20%2Dn%20openshift%2Dmigration%20%7C%20base64%20%2Dw%200


Following message is appearing when executed the command suggested in documentation:
~~~
$ oc sa get-token migration-controller -n openshift-migration 

Command "get-token" is deprecated, and will be removed in the future version. Use oc create token instead.
~~~

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