[PATCH, wwwdocs] gcc-11/changes: NVPTX: Mention new -misa=sm_35 default

[Gerald Pfeifer]

Hi Tom,

On Mon, 12 Oct 2020, Tom de Vries wrote:
> Mention new -misa=sm_35 default for NVPTX target in the gcc 11 release 
> notes.
> 
> See also PR target/97348.
> 
> Verified using the validator
> 
> OK?

yes, this is okay.

FWIW, I am happy to review wwwdocs patches.  As nvptx maintainer
you can also self approve if you desire so.  As you prefer. :-)

Gerald