Upgrade Transmission to 4.1.1 and fix stale docs

- Update Dockerfile to pull transmission 4.1.1-r1 from Alpine edge
  community repo while keeping stable alpine:3.22 base
- Fix service doc image reference (was linuxserver, now custom image)
- Mark transmission as reviewed in service-versions.yaml

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/changelog.d/feature-transmission-review.infra.md

@@ -0,0 +1 @@
+Upgrade Transmission from 4.0.6-r4 to 4.1.1-r1 (Alpine edge community repo)

docs/reference/services/transmission.md

@@ -17,7 +17,7 @@ BitTorrent daemon, primarily for downloading ZIM archives for [[kiwix]].
 | **URL** | https://torrent.ops.eblu.me |
 | **Tailscale URL** | https://torrent.tail8d86e.ts.net |
 | **Namespace** | `torrent` |
-| **Image** | `lscr.io/linuxserver/transmission:latest` |
+| **Image** | `registry.ops.eblu.me/blumeops/transmission` |
 | **Storage** | NFS PVC from [[sifaka|Sifaka]] |
 
 ## Storage Layout