fix

docs/guide/incus/incus_install.md

@@ -29,6 +29,12 @@ curl -L https://raw.githubusercontent.com/oneclickvirt/incus/main/scripts/incus_
 curl -L https://cdn.spiritlhl.net/https://raw.githubusercontent.com/oneclickvirt/incus/main/scripts/incus_install.sh -o incus_install.sh && chmod +x incus_install.sh && bash incus_install.sh
 ```
 
+或
+
+```shell
+bash incus_install.sh
+```
+
 初始化配置的例子：
 
 如果系统盘除去已占用空间还有18G硬盘空余，想开2G虚拟内存(2048MB的SWAP)，15G的存储池，按照命令行的提示则依次输入```2048```和```15```