Fix #2460 doctest fails for doi metadata

[fnielsen]

This includes fixing styling errors in utils.py and views.py as well as the fix for the doctest in doi.py

Fixes #2460

Description

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Caveats

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• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update
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If you make changes to the Python code

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Testing

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Checklist

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• [x] I have considered accessibility in my implementation
• [x] There are no remaining debug statements (print, console.log, ...)