[3.14] Docs: except with multiple exceptions parentheses not required (GH-145848) (#145904)

Docs: except with multiple exceptions parentheses not required (GH-145848)

As of PEP 758 the except statement doesn't require parentheses anymore for exception tuples.
(cherry picked from commit 6d1e9ceed3e70ebc39953f5ad4f20702ffa32119)


See: https://peps.python.org/pep-0758/

Co-authored-by: Maurizio Sambati <duilio@users.noreply.github.com>