[docs] [issue39545] await is not supported in f-string in 3.6

Change by Serhiy Storchaka <storchaka+cpython@gmail.com>: ---------- pull_requests: +17833 pull_request: https://github.com/python/cpython/pull/18459 _______________________________________ Python tracker <report@bugs.python.org> <https://bugs.python.org/issue39545> _______________________________________