[issue36490] Modernize function signature in Archiving section of shutil doc

[Terry J. Reedy]

Change by Terry J. Reedy <tjreedy at udel.edu>:


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stage:  -> needs patch
title: Modernize function signature format in Archiving section of shutil doc -> Modernize function signature  in Archiving section of shutil doc

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue36490>
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