doc: update README.md.

Author: liqiang-fit2cloud

README.md

@@ -24,7 +24,7 @@ MaxKB = Max Knowledge Brain, it is an open-source platform for building enterpri
 Execute the script below to start a MaxKB container using Docker:
 
 ```bash
-docker run -d --name=maxkb --restart=always -p 8080:8080 -v ~/.maxkb:/opt/maxkb 1panel/maxkb:v2
+docker run -d --name=maxkb --restart=always -p 8080:8080 -v ~/.maxkb:/opt/maxkb 1panel/maxkb
 ```
 
 Access MaxKB web interface at `http://your_server_ip:8080` with default admin credentials:

README_CN.md

@@ -27,10 +27,10 @@ MaxKB 三分钟视频介绍：https://www.bilibili.com/video/BV18JypYeEkj/
 
 ```
 # Linux 机器
-docker run -d --name=maxkb --restart=always -p 8080:8080 -v ~/.maxkb:/opt/maxkb registry.fit2cloud.com/maxkb/maxkb:v2
+docker run -d --name=maxkb --restart=always -p 8080:8080 -v ~/.maxkb:/opt/maxkb registry.fit2cloud.com/maxkb/maxkb
 
 # Windows 机器
-docker run -d --name=maxkb --restart=always -p 8080:8080 -v C:/maxkb:/opt/maxkb registry.fit2cloud.com/maxkb/maxkb:v2
+docker run -d --name=maxkb --restart=always -p 8080:8080 -v C:/maxkb:/opt/maxkb registry.fit2cloud.com/maxkb/maxkb
 
 # 用户名: admin
 # 密码: MaxKB@123..