[docs] [issue15831] comma after leading optional argument is after bracket in docs

[Chris Jerdonek]

Chris Jerdonek added the comment:

> We are moving toward using the same signatures that we have in the Python code....  The single * is not so common (yet),

I created issue 15865 to add the single * to the documentation where appropriate.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15831>
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