[issue11643] Use |version| instead of X.Y in the doc

[Terry J. Reedy]

Terry J. Reedy <tjreedy at udel.edu> added the comment:

If the docs literally use "X.Y", so that that can be grepped, then attaching a grep result would make this even easier for someone on Windows without grep.

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nosy: +terry.reedy

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<http://bugs.python.org/issue11643>
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