[docs] [issue27416] typo / missing word in docs.python.org/2/library/copy.html

[STINNER Victor]

STINNER Victor added the comment:

> Because deep copy copies everything it may copy too much, e.g., administrative data structures that should be shared even between copies.

I agree that the sentence sounds wrong. I applied David's patch, it also helped me to understand. Thanks :-)

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nosy: +haypo
resolution:  -> fixed
status: open -> closed

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<http://bugs.python.org/issue27416>
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