[docs] [issue11352] Update cgi module doc

[Éric Araujo]

Changes by Éric Araujo <merwok at netwok.org>:


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keywords: +needs review, patch
nosy: +amaury.forgeotdarc, andyharrington, erob, flox, gagenellina, haypo, oopos, pebbe, r.david.murray, tcourbon, tobias, v+python
priority: normal -> high
stage:  -> patch review
title: Bug in cgi module doc -> Update cgi module doc
type: behavior -> 
versions: +Python 3.3

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue11352>
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