refactor: put docstring into a single line

[deepsource-autofix[bot]]

If a docstring fits in a single line (72 characters according to PEP8), it is recommended to have the quotes on the same line.

[deepsource-io[bot]]

Here's the code health analysis summary for commits 82e2e4f..635817b. View details on DeepSource ↗.

Analysis Summary

Analyzer	Status	Summary	Link
Python	❌ Failure	❗ 1 occurence introduced 🎯 3 occurences resolved	View Check ↗

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