[docs] [issue34712] Style fixes in examples of "Input and Output" tutorial section

[Karthikeyan Singaravelan]

Change by Karthikeyan Singaravelan <tir.karthi at gmail.com>:


----------
nosy: +xtreak

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue34712>
_______________________________________