Run configlet format

[angelikatyborska]

Run ./bin/configlet fmt --update so that the CI starts passing again

[github-actions]

Thank you for contributing to exercism/elixir 💜 🎉. This is an automated PR comment 🤖 for the maintainers of this repository that helps with the PR review process. You can safely ignore it and wait for a maintainer to review your changes.

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Automated comment created by PR Commenter 🤖.

[jiegillet]

Mmh I love the smell of a fresh automated formatting PR 🌹