Update README.md

README.md

@@ -7,17 +7,25 @@
 - volta
 1. 建议使用 [volta](https://volta.sh/) 安装 [Node.js](https://nodejs.org/)
 ```sh
-volta install node@20.11.0
+volta install node@20.17.0
+```
+```sh
+volta install pnpm
 ```
 2. 安装依赖
 ```sh
-npm i
+pnpm i
 ```
 3. 本地预览
 ```sh
-npm run docs:dev
+pnpm run docs:dev
 ```
 4. 构建静态页面。构建完成的网页会保存在 ``src\.vuepress\dist``
 ```sh
-npm run docs:build
+pnpm run docs:build
+```
+
+5. 更新依赖
+```sh
+pnpx vp-update
 ```