docs: note NFS remount restart requirement for media apps

docs/servers/PLAUSIBLEDENABILITY.md

@@ -69,6 +69,8 @@ Current light-tier notes:
 > ```bash
 > sudo bash /mnt/tank/docker/scripts/mount-unraid-nfs.sh
 > ```
+>
+> **Important:** if `/mnt/unraid/data` or `/mnt/unraid/immich` gets remounted after dependent containers are already running, restart the bind-mounted consumers so they pick up the live NFS mount instead of the pre-remount underlay. Current restart set: Plex, Audiobookshelf, Calibre-Web, and Immich Server.
 
 ## Known Issues
 - immich-ml intermittently unhealthy — investigate GPU/CUDA health