USWDS-Site - Bug: Checkbox guidance shows "no variants"

[mahoneycm]

Describe the bug

Both Radio and Checkbox feature tile variants but have inconsistent guidance pages. Radio has tile variant listed under "Radio button variants" while checkbox has "This component has no variants"

Originally flagged in our public slack channel. Thanks Geoffrey!

Steps to reproduce the bug

1. Visit Radio guidance page
2. Review variants section
3. Visit Checkbox guidance page
4. Review variants section

Expected Behavior

Checkbox should match Radio guidance and list tile variant in variant section.

Screenshots

Radio

Checkbox

System setup

No response

Additional context

No response

Code of Conduct

• [X] I agree to follow this project's Code of Conduct.
• [X] I checked the current issues for duplicate bug reports.