doc:it_IT: fix of 2 typos

Fix of 2 typos spotted reading documentation in italian

Signed-off-by: Fabio Fantoni <fantonifabio@tiscali.it>
Acked-by: Federico Vaga <federico.vaga@vaga.pv.it>
Link: https://lore.kernel.org/r/20230101155548.12350-1-fantonifabio@tiscali.it


Signed-off-by: Jonathan Corbet <corbet@lwn.net>