fix bug

src/main/java/com/mobvista/apptag/service/impl/TreeTagServiceImpl.java

@@ -108,6 +108,7 @@ public class TreeTagServiceImpl implements TreeTagService {
         treeTag.setSecondTag(oldTreeTag.getSecondTag());
         treeTag.setThirdTag(oldTreeTag.getThirdTag());
         treeTag.setPlatform(oldTreeTag.getPlatform());
+        treeTag.setUpdateTime(new Date());
         return treeTag;
     }