Change subtopic of smartphone handler to "phone".

src/main/java/org/openhab/binding/openlicht/handler/AbstractSmartphoneHandler.java

@@ -78,13 +78,12 @@ public abstract class AbstractSmartphoneHandler extends AbstractMqttHandler {
     private void logUnsupportedCategory(String category) {
         if (seenUnsupportedCategories.add(category)) {
             logger.warn("Category not supported: {}", category);
-
         }
     }
 
     @Override
     protected String getSubTopic() {
-        return "samsung";
+        return "phone";
     }
 
 }