[docs] [issue33459] Fix "tuple display" mention in Expressions

Change by miss-islington <mariatta.wijaya+miss-islington@gmail.com>: ---------- pull_requests: +15576 pull_request: https://github.com/python/cpython/pull/15940 _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue33459> _______________________________________