review request for docs patch

[Sylvain Faivre]

Hello,

I sent a small docs patch to this list on 28/sept/2021.
The emails are archived here :
https://lists.proxmox.com/pipermail/pve-devel/2021-September/050162.html
https://lists.proxmox.com/pipermail/pve-devel/2021-September/050163.html

Could anyone please take a look at this patch ?
This is my first time trying to contribute to Proxmox, so please tell me if
anything needs correcting.

Sylvain