docs(CLI) Clarify functionality of --notify flag (taken from configuration docs)

[sebastiancarlos]

This should make the flag more grokable, particularly by explaining that it refers to native OS notifications.

[linux-foundation-easycla]

• ✅ login: cpojer / name: Christoph Nakazawa (0a052f4)
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[github-actions]

This PR is stale because it has been open 90 days with no activity. Remove stale label or comment or this will be closed in 30 days.

[sebastiancarlos]

yeah no we cool

[github-actions]

This PR is stale because it has been open 90 days with no activity. Remove stale label or comment or this will be closed in 30 days.

[sebastiancarlos]

lol

[cpojer]

Thanks!