[docs] Typo in code snippet

https://docs.python.org/3/library/asyncio-task.html#shielding-from-cancellat... In this endpoint there is a typo Namely, The statement: task = asyncio.create_task(something()) res = await shield(task) is equivalent to: res = await something() should be The statement: task = asyncio.create_task(something()) res = await shield(task) is equivalent to: res = await shield(something()) Respectfully, Dyussenov Nuraly