Electriq CD12Pro: add missing quotes to icon

Colon is a special character in yaml, so strings containing it need to be quoted

PR #256

custom_components/tuya_local/devices/electriq_cd12pro_dehumidifier.yaml

@@ -101,7 +101,7 @@ secondary_entities:
   - entity: switch
     name: Ionizer
     category: config
-    icon: mdi:creation
+    icon: "mdi:creation"
     dps:
       - id: 10
         name: switch