[PATCH v3] doc: reword sample app guides

[Thomas Monjalon]

14/10/2024 19:03, Nandini Persad:
> I have reviewed these sections for grammar/clarity
> and made small modifications to the formatting of sections
> to adhere to a template which will create uniformality
> in the sample application user guides overall.
> 
> Signed-off-by: Nandini Persad <nandinipersad361 at gmail.com>
> Acked-by: Chengwen Feng <fengchengwen at huawei.com>

Applied with few improvements in links and code formatting, thanks.