Fix inconsistent indentation

[gnawin]

Pull request details

Describe the changes made in this pull request

Docstring does not display correctly due to wrong indentation.

List of related issues or pull requests

Collaboration confirmation

As a contributor I confirm

• I read and followed the instructions in README.dev.md
• The documentation is up to date with the changes introduced in this Pull Request (or NA)
• Tests are passing
• Lint is passing

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (86e4740) to head (26eef2e).

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #23   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            3         3           
  Lines           75        75           
=========================================
  Hits            75        75           

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