docs: update readme

Author: action-hong

README.md

@@ -2,7 +2,7 @@
 
 [![NPM version](https://img.shields.io/npm/v/unocss-preset-scrollbar?color=a1b858&label=)](https://www.npmjs.com/package/unocss-preset-scrollbar) ![npm](https://img.shields.io/npm/dw/unocss-preset-scrollbar)
 
-a [unocss](https://github.com/unocss/unocss) preset for scrollbar，here is a [demo](https://stackblitz.com/edit/vitejs-vite-gyun7j?file=src/components/HelloWorld.vue)
+a [unocss](https://github.com/unocss/unocss) preset for scrollbar，here is a [demo](https://stackblitz.com/edit/vitejs-vite-gyun7j?file=index.html)
 
 English | [简体中文](./README.zh-CN.md)
 

README.zh-CN.md

@@ -2,7 +2,7 @@
 
 [![NPM version](https://img.shields.io/npm/v/unocss-preset-scrollbar?color=a1b858&label=)](https://www.npmjs.com/package/unocss-preset-scrollbar) ![npm](https://img.shields.io/npm/dw/unocss-preset-scrollbar)
 
-[`unocss`](https://github.com/unocss/unocss) 的滚动预设，[一个简单的实例](https://stackblitz.com/edit/vitejs-vite-gyun7j?file=src/components/HelloWorld.vue)
+[`unocss`](https://github.com/unocss/unocss) 的滚动预设，[一个简单的实例](https://stackblitz.com/edit/vitejs-vite-gyun7j?file=index.html)
 
 简体中文 | [English](./README.md)