[docs] [issue21125] traceback.extract_tb says "quadruple" when it means "tuple"

[R. David Murray]

R. David Murray added the comment:

A google for quadruple got me wikipedia as the first hit, with this as the match text:

    "Quadruple may refer to: A 4-tuple, ..."

So, it's tech-speak.  The alternative would be to say either "a 4-tuple" or "a tuple of four elements".  I'm fine with someone making that change, but I don't think it is terrible that the word is used the way it is.

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nosy: +r.david.murray

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