Update PmsProductCategoryDao.java

mall-admin/src/main/java/com/macro/mall/dao/PmsProductCategoryDao.java

@@ -9,5 +9,8 @@ import java.util.List;
  * Created by macro on 2018/5/25.
  */
 public interface PmsProductCategoryDao {
+    /**
+     * 获取商品分类及其子分类
+     */
     List<PmsProductCategoryWithChildrenItem> listWithChildren();
 }