docs: del dead link

2023旧版内容/4.人工智能/4.4FAQ：常见问题.md

@@ -51,7 +51,6 @@
 尝试阅读以下内容
 
 - [形象的机器学习简介](http://www.r2d3.us/visual-intro-to-machine-learning-part-1/)
-- [为开发者准备的机器学习简介](http://blog.algorithmia.com/introduction-machine-learning-developers/)
 - [菜鸟的机器学习基础](https://www.analyticsvidhya.com/blog/2015/06/machine-learning-basics/)
 - [你如何向非计算机专业的人来解释机器学习与数据挖掘？](https://www.quora.com/How-do-you-explain-Machine-Learning-and-Data-Mining-to-non-Computer-Science-people)
 - [在罩子下的机器学习，博文简单明了地介绍了机器学习的原理](https://georgemdallas.wordpress.com/2013/06/11/big-data-data-mining-and-machine-learning-under-the-hood/)

2023旧版内容/4.人工智能/ch02/ch2.2/ch2.2.3/WideNDeep.md

@@ -112,6 +112,6 @@ def WideNDeep(linear_feature_columns, dnn_feature_columns):
 - [推荐系统系列（六）：Wide&Deep理论与实践](https://zhuanlan.zhihu.com/p/92279796?utm_source=wechat_session&utm_medium=social&utm_oi=753565305866829824&utm_campaign=shareopn)
 - [见微知著，你真的搞懂Google的Wide&Deep模型了吗?](https://zhuanlan.zhihu.com/p/142958834)
 - [用NumPy手工打造 Wide & Deep](https://zhuanlan.zhihu.com/p/53110408)
-- [tensorflow官网的WideDeepModel](https://www.tensorflow.org/api_docs/python/tf/keras/experimental/WideDeepModel)
+- [tensorflow官网的WideDeepModel](https://www.tensorflow.org/versions/r1.15/api_docs/python/tf/keras/experimental/WideDeepModel)
 - [详解 Wide & Deep 结构背后的动机](https://zhuanlan.zhihu.com/p/53361519)