[python3] README: Some formatting changes.
[python3] README: Some formatting changes.

--HG--
extra : transplant_source : %92g%13%F8%F1%1A%03%EC%D4%5EE%3DrY%D0%9A%95%D0%09%C3

userzimmermann/robotframework,userzimmermann/robotframework,userzimmermann/robotframework,userzimmermann/robotframework,userzimmermann/robotframework