PH-W218: name low humidity warning correctly.

custom_components/tuya_local/devices/phw218_waterquality_monitor.yaml

@@ -266,7 +266,7 @@ secondary_entities:
           min: 0
           max: 100
   - entity: number
-    name: High humidity warning
+    name: Low humidity warning
     category: config
     icon: "mdi:water-percent-alert"
     dps:
@@ -277,4 +277,3 @@ secondary_entities:
         range:
           min: 0
           max: 100
-