Move comma from K5 Max info.json

[durr1602]

Description

I moved a trailing comma and formatted info.json. This is useful to be parsed by tools such as https://nickcoutsos.github.io/keymap-layout-tools/ (and maybe others). Haven't had any issue with build or flash so it should't be too crucial.

Types of Changes

• Core
• Bugfix
• New feature
• Enhancement/optimization
• Keyboard (addition or update)
• Keymap/layout (addition or update)
• Documentation

Issues Fixed or Closed by This PR

Checklist

• My code follows the code style of this project: C, Python
• I have read the PR Checklist document and have made the appropriate changes.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have tested the changes and verified that they work and don't break anything (as well as I can manage).

[github-actions]

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[durr1602]

@lokher could you please merge? similar to #424
Let me know if I can help with anything