swapoff -a && swapon -a 关闭后又开启，用户容易误解

[jacktd9]

File: /check-before-deployment.md

echo "vm.swappiness = 0">> /etc/sysctl.conf
swapoff -a && swapon -a
sysctl -p

遇到好些个用户直接 copy 脚本执行，未看文章前头的说明，使得 swap 没被关闭，是否考虑把 && swapon -a 去掉呢？
或者追加 [...] 说明下

[CharLotteiu]

@superlzs0476 PTAL, thanks~

[github-actions]

This issue is stale because it has been open for 60 days with no activity. If no comment has been made and the lifecycle/stale label is not removed, this issue will be closed in 15 days.

[TomShawn]

@pepezzzz 能帮忙看下吗？谢谢~

[shichun-0415]

Fixed in #7443.