docs: add notice to README

Author: chenjiahan

README.md

@@ -2,7 +2,7 @@
 
 An Rsbuild plugin to provide compile-time support for styled-components. It improves debugging and adds server-side rendering support for styled-components.
 
-> [styled-components](https://styled-components.com/) is a popular CSS-in-JS implementation library, which uses the new JavaScript feature [Tagged template](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals#tagged_templates) to write component CSS styles.
+[styled-components](https://styled-components.com/) is a popular CSS-in-JS implementation library, which uses the new JavaScript feature [Tagged template](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals#tagged_templates) to write component CSS styles.
 
 <p>
   <a href="https://npmjs.com/package/@rsbuild/plugin-styled-components">
@@ -11,6 +11,12 @@ An Rsbuild plugin to provide compile-time support for styled-components. It impr
   <img src="https://img.shields.io/badge/License-MIT-blue.svg?style=flat-square&colorA=564341&colorB=EDED91" alt="license" />
 </p>
 
+## Notice
+
+This Rsbuild plugin is simply a wrapper for [@swc/plugin-styled-components](https://www.npmjs.com/package/@swc/plugin-styled-components).
+
+If you have any requirements, it is recommended to file an issue to [SWC plugins repo](https://github.com/swc-project/plugins) or the styled-components repo.
+
 ## Usage
 
 Install: