Valehaus: fix secondary entities block start

YAML syntax

custom_components/tuya_local/devices/valehaus_syzn119_tow_w.yaml

@@ -41,7 +41,7 @@ primary_entity:
                   value: idle
             - dps_val: false
               value: "off"
-secondary_entities
+secondary_entities:
   - entity: select
     name: Timer
     icon: "mdi:timer"