improve predefined roles documentation

When Who What
2024-07-10 21:40:04 Nathan Bossart (bossartn) Closed in commitfest 2024-07 with status: Committed
2024-06-26 15:37:25 Nathan Bossart (bossartn) New status: Ready for Committer
2024-06-26 15:37:20 Nathan Bossart (bossartn) Added bossartn as committer
2024-06-18 16:54:16 Nathan Bossart (bossartn) Changed authors to Nathan Bossart (bossartn)
2024-06-18 16:54:16 Nathan Bossart (bossartn) Changed targetversion to 18
2024-06-18 16:54:10 Nathan Bossart (bossartn) Attached mail thread ZmtM-4-eRtq8DRf6@nathan
2024-06-18 16:54:10 Nathan Bossart (bossartn) Created patch record