[LTP] [PATCH 1/1] doc: Use :manpages_url: for man pages links

[Avinesh Kumar]

Hi Petr,
> Use sphinx internal way to link man pages tohttps://man7.org/
> https://www.sphinx-doc.org/en/master/usage/configuration.html#confval-manpages_url
>
> This is much better than using extlinks sphinx extension.
>
> Signed-off-by: Petr Vorel<pvorel@suse.cz>

Reviewed-by: Avinesh Kumar<avinesh.kumar@suse.com>

Regards,

Avinesh