Update README.md

README.md

 # AutoBuildImmortalWrt
 [![GitHub](https://img.shields.io/github/license/wukongdaily/AutoBuildImmortalWrt.svg?label=LICENSE&logo=github&logoColor=%20)](https://github.com/wukongdaily/AutoBuildImmortalWrt/blob/master/LICENSE)
 ![GitHub Stars](https://img.shields.io/github/stars/wukongdaily/AutoBuildImmortalWrt.svg?style=flat&logo=appveyor&label=Stars&logo=github)
-![GitHub Forks](https://img.shields.io/github/forks/wukongdaily/AutoBuildImmortalWrt.svg?style=flat&logo=appveyor&label=Forks&logo=github) [![Github](https://img.shields.io/badge/RELEASE:AutoBuildImmortalWrt-123456?logo=github&logoColor=fff&labelColor=green&style=flat)](https://github.com/wukongdaily/AutoBuildImmortalWrt/releases) [![Bilibili](https://img.shields.io/badge/Bilibili-123456?logo=bilibili&logoColor=fff&labelColor=fb7299)](https://www.bilibili.com/video/BV111yhYUEMA) [![操作步骤](https://img.shields.io/badge/YouTube-123456?logo=youtube&labelColor=ff0000)](https://youtu.be/BU4dFoi_UuU)
+![GitHub Forks](https://img.shields.io/github/forks/wukongdaily/AutoBuildImmortalWrt.svg?style=flat&logo=appveyor&label=Forks&logo=github) [![Github](https://img.shields.io/badge/RELEASE:AutoBuildImmortalWrt-123456?logo=github&logoColor=fff&labelColor=green&style=flat)](https://github.com/wukongdaily/AutoBuildImmortalWrt/releases) [![Bilibili](https://img.shields.io/badge/Bilibili-123456?logo=bilibili&logoColor=fff&labelColor=fb7299)](https://www.bilibili.com/video/BV1EG6VYCER3) [![操作步骤](https://img.shields.io/badge/YouTube-123456?logo=youtube&labelColor=ff0000)](https://youtu.be/LEctBlkLMDs)
 
 ## 🤔 这是什么？
 [操作步骤](README_CN.md) | 简介 <br>
 它是一个工作流。可快速构建 带docker且支持自定义固件大小的 immortalWrt
-> 1、支持自定义固件大小 默认1GB<br>
+> 1、支持自定义固件大小 默认1GB 最大5GB(由于release限制最多5GB)<br>
 > 2、支持预安装docker（可选）<br>
 > 3、目前支持x86-64 和 rockchip 两个平台（后续会增加）<br>
 > 4、支持批量编译 使用逗号分隔机型