Update UmsAdminCacheServiceImpl.java

mall-admin/src/main/java/com/macro/mall/service/impl/UmsAdminCacheServiceImpl.java

@@ -18,7 +18,7 @@ import java.util.List;
 import java.util.stream.Collectors;
 
 /**
- * UmsAdminCacheService实现类
+ * 后台用户缓存操作Service实现类
  * Created by macro on 2020/3/13.
  */
 @Service