fix: 添加CPU说明

Author: spiritLHLS

docs/en/guide/incus/incus_precheck.md

@@ -15,6 +15,7 @@ Feel free to give the project a ```Star``` for free support!-->[https://github.c
 Hardware requirements.
 - System: Ubuntu 20+, Debian 11+, RockyLinux 9+, AlmaLinux 9+, Centos 9+
 - Virtualization: KVM, VMWARE recommended.
+- CPU: The number of cores should be greater than or equal to 2, otherwise there may be a kernel idling slice cycle resulting in 100% occupancy
 - Memory: At least 512MB of RAM
 - Hard disk: hard disk (system disk) at least 10G
 - Network: Independent IPV4 address, IPV6 is optional, bandwidth can download scripts on the line, the network can connect to the Github raw page on the line

docs/guide/incus/incus_precheck.md

@@ -15,6 +15,7 @@ outline: deep
 硬件要求:
 - 系统：Ubuntu 20+, Debian 11+, RockyLinux 9+, AlmaLinux 9+, Centos 9+
 - 虚拟化：推荐KVM、VMWARE虚拟化
+- CPU：内核数最好大于或等于2，否则可能出现内核空转切片循环导致占用100%
 - 内存：内存至少512MB
 - 硬盘：硬盘(系统盘)至少10G
 - 网络：独立的IPV4地址，IPV6可有可无，带宽能下载脚本就行，网络能连接Github的raw页面就行