[PATCH] docs: fix some broken references due to txt->rst renames

[Jonathan Corbet]

On Tue, 18 Jun 2019 10:33:58 -0300
Mauro Carvalho Chehab <mchehab+samsung at kernel.org> wrote:

> here are three left-overs from the recent file renames,
> probably due to some other conflicting patch.
> 
> Fix them.
> 
> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung at kernel.org>
> ---
> 
> This patch is against today's next-20190617 branch. Not sure if it
> will apply cleanly at -docs tree. If not,  Please let me know for me to
> split.

Indeed it does not; one of the files being patched doesn't even exist in
my world...

jon