[PATCH] doc: fix opensbi build steps for AX25-AE350

[Bin Meng]

On Mon, Dec 30, 2019 at 10:29 PM Jagan Teki <jagan at amarulasolutions.com> wrote:
>
> OpenSBI build steps are marked as normal text in
> AX25-AE350 documentation.
>
> Move them into code-block so-that it can show it
> as build steps.
>
> Cc: Heinrich Schuchardt <xypron.glpk at gmx.de>
> Signed-off-by: Jagan Teki <jagan at amarulasolutions.com>
> ---
>  doc/board/AndesTech/ax25-ae350.rst | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
>

Tested-by: Bin Meng <bmeng.cn at gmail.com>