describe special values in GUC descriptions more consistently
| When | Who | What |
|---|---|---|
| 2025-02-14 16:47:28 | Nathan Bossart (bossartn) | Closed in commitfest 2025-03 with status: Committed |
| 2025-02-12 21:06:53 | Nathan Bossart (bossartn) | Added bossartn as committer |
| 2025-02-12 21:06:51 | Nathan Bossart (bossartn) | New status: Ready for Committer |
| 2025-02-07 22:28:30 | Nathan Bossart (bossartn) | Changed authors to Nathan Bossart (bossartn) |
| 2025-02-07 22:28:30 | Nathan Bossart (bossartn) | Changed targetversion to 18 |
| 2025-02-07 22:28:25 | Nathan Bossart (bossartn) | Attached mail thread Z6aIy4aywxUZHAo6@nathan |
| 2025-02-07 22:28:25 | Nathan Bossart (bossartn) | Created patch record |