doc: Update README.md

Author: jaywcjlove

core/README.md

@@ -190,6 +190,16 @@ npm run build
 The build is minified and the filenames include the hashes.
 Your app is ready to be deployed!
 
+## Contributors
+
+As always, thanks to our amazing contributors!
+
+<a href="https://github.com/uiwjs/react-only-when/graphs/contributors">
+  <img src="https://uiwjs.github.io/react-only-when/CONTRIBUTORS.svg" />
+</a>
+
+Made with [contributors](https://github.com/jaywcjlove/github-action-contributors).
+
 
 ## License