Update README.md

Author: iamNCJ

README.md

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 # OpenWrt for Pi 4B
 
-[![Stars](https://img.shields.io/github/stars/iamNCJ/Openwrt-Pi4.svg?label=Stars&style=social)](https://github.com/iamNCJ/Openwrt-Pi4/stargazers) [![Forks](https://img.shields.io/github/forks/iamNCJ/Openwrt-Pi4.svg?label=Fork&style=social)](https://github.com/iamNCJ/Openwrt-Pi4/network/members) ![Build OpenWrt](https://github.com/iamNCJ/Openwrt-Pi4/workflows/Build%20OpenWrt/badge.svg?branch=master)
+[![Stars](https://img.shields.io/github/stars/iamNCJ/Openwrt-Pi4.svg?label=Stars&style=social)](https://github.com/iamNCJ/Openwrt-Pi4/stargazers) [![Forks](https://img.shields.io/github/forks/iamNCJ/Openwrt-Pi4.svg?label=Fork&style=social)](https://github.com/iamNCJ/Openwrt-Pi4/network/members)
 
 # 使用方法
 
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 - 针对树莓派4进行性能调优
 - 精简系统，极致性能
-- 虚拟化支持 (Docker & LXC)
+- 虚拟化支持 (Docker)
 - L2TP VPN拨号支持
-- MJPG-Streamer v4l2相机支持
+- DoH支持
 - SS obfs插件支持
 
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