Update README.md

Author: kiddin9

README.md

@@ -108,10 +108,10 @@ make defconfig
    ```
 4. 二次编译执行脚本
 ```bash
-cd openwrt && git pull && cd -
 rm -Rf Actions-OpenWrt-Nginx && git clone https://github.com/garypang13/Actions-OpenWrt-Nginx
 cp -Rf Actions-OpenWrt-Nginx/* openwrt/
 cd openwrt
+git pull 
 rm -Rf feeds
 ./scripts/feeds update -a
 ./diy.sh