doc:it_IT: align Italian documentation

Translation for the following patches

commit 0aa78b10 ("Documentation/changes: Raise minimum supported binutils version to 2.23")
commit 7d717887 ("Documentation: include sign off for reverts")
commit 905705a8 ("docs: programming-languages: refresh blurb on clang support")
commit 5ff4aa70 ("docs: submitting-patches: use :doc: for references")
commit 030f066f ("docs: submitting-patches: describe preserving review/test tags")
commit 68e4cd17 ("docs: deprecated.rst: Add zero-length and one-element arrays")
commit 5429ef62 ("compiler/gcc: Raise minimum GCC version for kernel builds to 4.8")
commit 5b5bbb8c ("docs: process: Add an example for creating a fixes tag")
commit 858e6845 ("docs: dt: convert submitting-patches.txt to ReST format")
commit cca73e49 ("docs: Correct the release date of 5.2 stable")
commit c170f2eb ("docs: Document cross-referencing between documentation pages")
commit 7c8b9e30 ("kernel-doc: Update "cross-referencing from rST" section to use automarkup")
commit 27def953 ("docs: deprecated.rst: Expand str*cpy() replacement notes")
commit 17dca050 ("docs: deprecated.rst: Update zero-length/one-element arrays section")
commit 3519c4d6 ("Documentation: add minimum clang/llvm version")
commit 0bddd227 ("Documentation: update for gcc 4.9 requirement")
commit 9f364b60 ("submitting-patches.rst: presume git will be used")
commit 4ebdf7be ("Documentation/maintainer: rehome sign-off process")
commit 7433ff33 ("Documentation/process: expand plain-text advice")
commit eb45fb2f ("docs: process: Add cross-link to security-bugs")
commit bdc48fa1 ("checkpatch/coding-style: deprecate 80-column warning")
commit f67281a7 ("Documentation: process: step 2: Link to email list fixed")

Signed-off-by: Federico Vaga <federico.vaga@vaga.pv.it>
Link: https://lore.kernel.org/r/20201114083342.13935-1-federico.vaga@vaga.pv.it


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