feat: opt code

Author: tangwenhui1

README.md

@@ -301,8 +301,6 @@ rc-cascader is released under the MIT license.
 
 ## 🤝 Contributing 
 
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 <a href="https://openomy.app/github/react-component/cascader" target="_blank" style="display: block; width: 100%;" align="center">
   <img src="https://www.openomy.app/svg?repo=react-component/cascader&chart=bubble&latestMonth=24" target="_blank" alt="Contribution Leaderboard" style="display: block; width: 100%;" />
 </a>