file updated

Author: KingRichord

README.md

@@ -41,7 +41,7 @@
 >| 主机(ARM/X86) | Intel/AMD/Jetson/RockChip/... | PTP    |
 
 # 开始使用
-## 下载·安装
+## 下载安装
 ```bash
 sudo apt-get install libzmq3-dev # 安装ZeroMQ
 git clone git@github.com:InfiniteSenseLab/InfiniteSenseSDK2.0.git -b main