Make sure default.json is read from correct loc

What does this MR do and why?

Fix bug where default.json was read from the wrong location.

How to set up and validate locally

Rename default.json.example to default.json in the config directory then start Crafty for first run.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• Have you checked this doesn't interfere/conflict/duplicate someone elses work?
• Have you fully tested your changes?
• Have you resolved any lint issues?
• Have you assigned a reviewer?
• Have you applied correct labels?