[docs] [issue17047] Fix double double words words

[Terry J. Reedy]

Terry J. Reedy added the comment:

I emailed the libffi subpatch to libffi-discuss.
Please add the 3.x news entry if you can get to it before I am able.
Then this issue can be closed, though the problem will obviously recur without an automatic check.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue17047>
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