[docs] functional howto documentation typo

[Alexander Ilin]

Good afternoon!

I've noticed a tiny typo in the documentation 
<https://docs.python.org/3/howto/functional.html>- in a generator 
expressions module ... seems to be placed 1 line upper than necessary

for expr3 in sequence3 ...
if condition3
for exprN in sequenceN

instead of

for expr3 in sequence3
if condition3 ...
for exprN in sequenceN

Here is a screenshot

Sorry if I've misunderstood something and ellipsis should be on their 
current position

Best,
Alexander

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