fix documentation for insert vacuum formula

When Who What
2025-11-19 16:03:04 Nathan Bossart (bossartn) Closed in commitfest PG19-3 with status: Committed
2025-11-19 16:03:04 Nathan Bossart (bossartn) Moved from CF PG19-4 to CF PG19-3
2025-11-19 15:20:23 Nathan Bossart (bossartn) Added bossartn as committer
2025-11-19 15:20:20 Nathan Bossart (bossartn) New status: Ready for Committer
2025-11-18 20:21:20 Nathan Bossart (bossartn) Attached mail thread CAAKRu_aj-P7YyBz_cPNwztz6ohP+vWis=iz3YcomkB3NpYA--w@mail.gmail.com
2025-11-18 20:21:20 Nathan Bossart (bossartn) Created patch record