[docs] [issue39369] Doc: Update mmap readline method documentation

New submission from Wellington PF <wellpardim10@gmail.com>: Update mmap readline method description. The fact that the readline method does update the file position should not be ignored since this might give the impression for the programmer that it doesn't update it. ---------- assignee: docs@python components: Documentation messages: 360191 nosy: docs@python, wellpardim priority: normal pull_requests: 17435 severity: normal status: open title: Doc: Update mmap readline method documentation type: enhancement _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue39369> _______________________________________