Added undescore to ignore new pydocstyle item (backport #428)

[mergify]

This is an automatic backport of pull request #428 done by Mergify.
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[Crola1702]

CI:

• Linux
• Linux-aarch64
• Windows
• Linux-rhel

[Crola1702]

@clalancette I think this is ready to be merged

[clalancette]

I'll do a new release of this today, and we'll consider a sync.