[PATCH] docs: fix typo in domcaps host-model CPU description

[Jim Fehlig]

On 3/24/20 3:44 AM, Jiri Denemark wrote:
> The situation on the first machine is a bit strange as there are no
> features disabled in host-model CPU definition, which makes it unclear
> why QEMU reports Cascadelake-Server as unusable (QEMU reports the
> reason, but we don't do so yet).

I got back to looking at this again today and found my older qemu is missing 
some patches. Sorry for wasting time, but thanks for helping me understand this 
topic a bit better!

Regards,
Jim