Run prettier

[paulmelnikow]

This is a follow-on to #1167 which turned prettier on.

Merging this separately so the commit with the tooling change is readable.

[shields-ci]

	Warnings
⚠️	This PR modified service code for time but not its test code. That's okay so long as it's refactoring existing code.
⚠️	Found 'assert' statement added in lib/error-helper.spec.js. Please ensure tests are written using Chai expect syntax
⚠️	Found 'assert' statement added in lib/badge-data.spec.js. Please ensure tests are written using Chai expect syntax

	Messages
📖	✨ Thanks for your contribution to Shields, @paulmelnikow!
📖	Thanks for contributing to our documentation. We ❤️ our documentarians!

Generated by 🚫 dangerJS

[shields-deployment]

This pull request was merged to master branch. Now this change is waiting for deployment.
Deploys usually happen every few weeks. After deployment changes are copied to gh-pages branch.

This badge displays deployment status:

[paulmelnikow]

If you run into merge conflicts, here's what I'd suggest:

1. Merge the parent commit ab051b3 into your branch and resolve any conflicts.
2. Merge this commit 7a664ca into your branch.
3. Resolve conflicts with git checkout --ours name-of-affected-file and commit the merge.
4. Run npm install if you don't already have prettier installed.
5. Run npm run prettier to pretty your changes.