fix(docker-env2): instance deploy uses --id (not --instance-id) in native alarm seed

docker-env2/seed-sites.sh

@@ -136,7 +136,7 @@ echo "Deploying the MxAlarm demo instance to site-x..."
 INSTANCE_ID=$($CLI $URL $AUTH --format json instance list \
     | python3 -c "import sys,json; print(next((i['id'] for i in json.load(sys.stdin) if i.get('uniqueName')=='MxAlarmDemo-1'), ''))" 2>/dev/null)
 if [ -n "$INSTANCE_ID" ]; then
-    $CLI $URL $AUTH instance deploy --instance-id "$INSTANCE_ID" \
+    $CLI $URL $AUTH instance deploy --id "$INSTANCE_ID" \
     || echo "  (instance deploy reported an issue — check 'deploy status')"
 else
     echo "  (MxAlarmDemo-1 not found — skipping instance deploy)"