docs: 新增 Skills CLI 安装命令 (#276)

Co-authored-by: pany <939630029@qq.com>

Author: heavenly-zy

README.md

@@ -132,6 +132,17 @@ pnpm test
 
 </details>
 
+<details>
+<summary>Install skills</summary>
+
+<br>
+
+```bash
+npx skills experimental_install
+```
+
+</details>
+
 ## Links
 
 **Online Preview**: [github-pages](https://un-pany.github.io/v3-admin-vite)

README.zh-CN.md

@@ -132,6 +132,17 @@ pnpm test
 
 </details>
 
+<details>
+<summary>安装 Skills</summary>
+
+<br>
+
+```bash
+npx skills experimental_install
+```
+
+</details>
+
 ## 链接
 
 **在线预览**：[github-pages](https://un-pany.github.io/v3-admin-vite)