docs: style guide

Author: chenjiahan

website/README.md

@@ -6,6 +6,10 @@ This website is built with [Rspress](https://github.com/web-infra-dev/rspress),
 
 Currently Rslib provides documentation in English and Chinese. If you can use Chinese, please update both documents at the same time. Otherwise, just update the English documentation.
 
+## Writing style guide
+
+The same as Rspack: [Writing style guide](https://github.com/web-infra-dev/rspack/tree/main/website#writing-style-guide).
+
 ### Image assets
 
 For images you use in the document, it's better to upload them to the [rspack-contrib/rstack-design-resources](https://github.com/rspack-contrib/rstack-design-resources) repository, so the size of the current repository doesn't get too big.