[PATCH v1] docs: move riscv under arch

[Jonathan Corbet]

Costa Shulyupin <costa.shul at redhat.com> writes:

> and fix all in-tree references.
>
> Architecture-specific documentation is being moved into Documentation/arch/
> as a way of cleaning up the top-level documentation directory and making
> the docs hierarchy more closely match the source hierarchy.
>
> Signed-off-by: Costa Shulyupin <costa.shul at redhat.com>
>

Applied, thanks.

This is the last of the arch moves!  Thanks again for helping push this
through to a conclusion.

jon