[bootlin/training-materials] 1f9b74: grammar: add missing word

[Andrius Pukšta]

  Branch: refs/heads/master
  Home:   https://github.com/bootlin/training-materials
  Commit: 1f9b7470c58b6d50ff0a77263f250bf62d1102ae
      https://github.com/bootlin/training-materials/commit/1f9b7470c58b6d50ff0a77263f250bf62d1102ae
  Author: Andrius Pukšta <54238857+yjhn at users.noreply.github.com>
  Date:   2023-03-28 (Tue, 28 Mar 2023)

  Changed paths:
    M labs/sysdev-tinysystem/sysdev-tinysystem.tex

  Log Message:
  -----------
  grammar: add missing word