Broken Links in the documentation

[shaoran]

• I have searched the issues of this repository and believe that this is not a duplicate.

Reproduction link

https://ant.design/components/typography/

Steps to reproduce

Go to that page and on the section Guidelines and Resources of the first example click on Patterns and Resource Download. You'll get a 404 page.

What is expected?

The documentation

What is actually happening?

You get a 404 page.

Environment	Info
antd	4.12.2
React	Any
System	Any
Browser	Any

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I have no idea how else to submit bugs in the documentation other than this. Sorry if that's not the correct channel, if not, how should you file bug reports for the documentation?