Issue for this PR

Closes #<>

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

README.ar.md was missing the Bosanski (README.bs.md) link in the language switcher, while the main README.md includes it.
This PR adds the missing language link to the Arabic README:

• README.bs.md -> Bosanski

This improves consistency across localized READMEs and makes the Bosnian translation discoverable from the Arabic README.

How did you verify your code works?

• Opened README.ar.md locally and verified the language links section.
• Confirmed the README.bs.md link is present and correctly formatted.
• Confirmed the change is limited to documentation.

Screenshots / recordings

N/A (documentation-only change)

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR