Lexy fan: correction to preset values.

custom_components/tuya_local/devices/lexy_f501_fan.yaml

@@ -29,9 +29,9 @@ primary_entity:
           value: true
         - dps_val: "90"
           value: true
-        - dps_val: "360+"
+        - dps_val: "360positive"
           value: true
-        - dps_val: "360-"
+        - dps_val: "360negative"
           value: true
     - id: 6
       name: timer