[PATCH v1] docs: update l3fwd sample app docs

[Stephen Hemminger]

On Fri,  3 Jun 2022 11:11:03 +0000
Sean Morrissey <sean.morrissey at intel.com> wrote:

> The L3FWD sample app doc contains outdated static code
> snippets and references to functions which no longer
> exist. This patch updates this doc to use up to date
> references.
> 
> Signed-off-by: Sean Morrissey <sean.morrissey at intel.com>

Patch looks good, but no longer applies cleanly.
If you still care, rebase and resubmit a new version.