chore: Fix lint warnings in default.yaml

[alexandear]

This PR fixes the following lint warnings:

See https://github.com/lima-vm/lima/actions/runs/15482949878?pr=3610

[afbjorklund]

The new YAML looks worse, now it is not just "commented out" anymore

Maybe needs to be rewritten, after the default mounts were moved to base?

i.e. templates/_default/mounts.yaml

• Keep comments on base properties #3457

[jandubois]

Thanks, LGTM

[jandubois]

The new YAML looks worse, now it is not just "commented out" anymore

The problem is that the file is both a working template, and the canonical documentation of the schema.

I think ultimately this can only be fixed properly by moving the documentation to a proper document with YAML snippets instead of using inline YAML comments.

Maybe needs to be rewritten, after the default mounts were moved to base?

Ideally the comments should have moved to the base template, but for documentation purposes we want all the examples in a single place.

Again, I think we will need to move to separate documentation.

I was planning to work on this once I've moved the FillDefault() logic (which includes merging of override.yaml and default.yaml) to the new template merging mechanism, but don't know when I will get the time to do that.