[chore] Fix mage fmt and reformat code

[belimawr]

What does this PR do?

This commit fixes mage fmt and reformat the code.

Why is it important?

It reformats the code, so if people run mage fmt on their PRs there are no changes unrelated to their code.

## Checklist

• My code follows the style guidelines of this project
• I have commented my code, particularly in hard-to-understand areas
• ~I have added tests that prove my fix is effective or that my feature works~~

## Author's Checklist
## Related issues

[elasticmachine]

💚 Build Succeeded

• Buildkite Build
• Commit: 6317de0

cc @belimawr

[mauri870]

Thanks. It seems we don't run mage fmt in CI to compare against the PR code, so I'm wondering if things might eventually degrade again as new code is pushed, since nothing is enforcing it.

[belimawr]

Thanks. It seems we don't run mage fmt in CI to compare against the PR code, so I'm wondering if things might eventually degrade again as new code is pushed, since nothing is enforcing it.

Yeah, they will. We need to add a check step like we do in Beats. I'll create an PR for that, it's such a small and impact-full change.

[belimawr]

Thanks. It seems we don't run mage fmt in CI to compare against the PR code, so I'm wondering if things might eventually degrade again as new code is pushed, since nothing is enforcing it.

Yeah, they will. We need to add a check step like we do in Beats. I'll create an PR for that, it's such a small and impact-full change.

The root cause was fmt missing from the check target, #364 will fix this.