[docs] [issue39348] wrong rst syntax in socket.rst

Change by miss-islington <mariatta.wijaya+miss-islington@gmail.com>: ---------- pull_requests: +17415 pull_request: https://github.com/python/cpython/pull/18020 _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue39348> _______________________________________