[faiproject/fai] 4e00c8: Fix typo in mk-data-partition usage

[jcromero]

  Branch: refs/heads/master
  Home:   https://github.com/faiproject/fai
  Commit: 4e00c87ef8d57aaef394f1abf830af8222069fa8
      https://github.com/faiproject/fai/commit/4e00c87ef8d57aaef394f1abf830af8222069fa8
  Author: jcromero <jcromero at disconfor.me>
  Date:   2023-12-19 (Tue, 19 Dec 2023)

  Changed paths:
    M bin/mk-data-partition

  Log Message:
  -----------
  Fix typo in mk-data-partition usage