fix widespread naming errors across all docs — array_started, fallback, FALLBACK_

array_start.sh → array_started.sh (bulk rename — actual file has always been
array_started.sh; docs consistently used the wrong name across 9 files)

failover.sh → fallback.sh (bulk rename — script is Fallback/fallback.sh;
docs used the old name throughout)

FAILOVER_HOST2_RUNS_FOR_HOST1_TIER1 → FALLBACK_HOST2_COVERS_HOST1_TIER1
(README.md — wrong variable name, actual vars use FALLBACK_ prefix and
COVERS_ not RUNS_FOR_)

docker_watchdog.sh attribution: "started by array_started.sh" → "called every
minute by watchdog_orchestrator.sh" (docker_watchdog is not in ARRAY_START_SCRIPTS)

server_reboot.sh shutdown sequence: step 7 "rc.docker stop" → calls
array_stopping.sh (user_scripts, fallback, rsync, mover, docker_container_stop)

Rsync manual ARRAY_START_SCRIPTS list: removed stability_watchdog and
docker_watchdog (now in watchdog_orchestrator); failover → fallback

unRAID_Essentials/Manual-Unraid_Essentials.md

@@ -414,7 +414,12 @@ user_scripts_stop.sh --dry-run    # show what would be stopped
 
 6. /etc/rc.d/rc.libvirt stop   (VM Manager)
 
-7. /etc/rc.d/rc.docker stop    (all containers stop)
+7. Orchestrators/array_stopping.sh — safe ordered array stop:
+   - user_scripts_stop.sh        stop background User Scripts
+   - fallback.sh --stop          graceful fallback teardown
+   - rsync_stop.sh --rsync-only  kill active rsync transfers
+   - mover_stop.sh               stop mover
+   - docker_container_stop.sh    stop all containers gracefully
 
 8. sync   (flush filesystem buffers to disk)