Bug summary

flake8 test is failing because of docstring styling in test_cbook.py. I noticed it when working on PR #27747. Failing test link

Code for reproduction

N/A

Actual outcome

N/A

Expected outcome

N/A

Additional information

No response

Operating system

No response

Matplotlib Version

3.8.2

Matplotlib Backend

MacOSX

Python version

3.11.4

Jupyter version

No response

Installation

None