Cleverio PF100: follow naming convention

PR #3384

custom_components/tuya_local/devices/cleverio_pf100_petfeeder.yaml

@@ -15,7 +15,7 @@ entities:
           min: 1
           max: 20
   - entity: binary_sensor
-    name: Eco Mode
+    name: Eco mode
     category: diagnostic
     dps:
       - id: 12