diff --git a/4.人工智能/ch02/ch2.2/ch2.2.5/2.2.5.0.md b/4.人工智能/ch02/ch2.2/ch2.2.5/2.2.5.0.md
index c1e37e2..c277745 100644
--- a/4.人工智能/ch02/ch2.2/ch2.2.5/2.2.5.0.md
+++ b/4.人工智能/ch02/ch2.2/ch2.2.5/2.2.5.0.md
@@ -118,7 +118,7 @@ def Shared_Bottom(dnn_feature_columns, num_tasks=None, task_types=None, task_nam
 
 参考资料：
 
-[https://developer.aliyun.com/article/793252](https://link.zhihu.com/?target=https%3A//developer.aliyun.com/article/793252)
+[https://developer.aliyun.com/article/793252](https://developer.aliyun.com/article/793252)
 
 https://zhuanlan.zhihu.com/p/291406172