fix: update mc command in minio-deployment example

[vishal-chdhry]

Thank you for contributing to Velero!

Please add a summary of your change

Minio recently removed config subccommand from mc command: minio/mc#5206. This PR updates the commands in minio-setup example to use alias instead of config

Does your change fix a particular issue?

No

Please indicate you've done the following:

• Accepted the DCO. Commits without the DCO will delay acceptance.
• Created a changelog file (make new-changelog) or comment /kind changelog-not-required on this PR.
• Updated the corresponding documentation in site/content/docs/main.

[kaovilai]

matches https://min.io/docs/minio/linux/reference/minio-mc/mc-alias-set.html#command-mc.alias.set

lgtm

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.57%. Comparing base (bfd9bc5) to head (a85f2c6).
Report is 8 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8982   +/-   ##
=======================================
  Coverage   59.57%   59.57%           
=======================================
  Files         370      370           
  Lines       40278    40278           
=======================================
  Hits        23995    23995           
  Misses      14780    14780           
  Partials     1503     1503           

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