[docs] Feedback on the error page

I am a Python enthusiast from China. I have been studying this manual recently, but I found a problem and hope to solve it as soon as possible. The problem bothering me. I believe it will also plague other beginners. This is url ： https://docs.python.org/zh-cn/3.7/archives/python-3.7.2-docs-pdf-a4.zip wrong description： 404 Not Found