[PATCH] doc: fix link to AF XDP PMD in CNI howto

[Bruce Richardson]

On Wed, Jun 21, 2023 at 11:57:18AM +0200, David Marchand wrote:
> Having an explicit link to the main repository documentation breaks
> other repositories documentation (like for LTS releases).
> 
> Fixes: 7fc6ae50369d ("net/af_xdp: support CNI Integration")
> Cc: stable at dpdk.org
> 
> Signed-off-by: David Marchand <david.marchand at redhat.com>
> ---

Acked-by: Bruce Richardson <bruce.richardson at intel.com>