content: update Ahmed's postdoc description to include co-supervision…

[chengjiahao1234]

… info

Type of Change

Please select the type of change (uncomment one):

✅ Content Update (news, publications, team)

Summary

Briefly describe what this PR changes:

Updated Ahmed Alagha's postdoctoral researcher description to include co-supervision information with Dr. Jamal Bentahar.

Changes Made

List specific files or sections changed:

• _data/postdocs.yml - Updated Ahmed Alagha's info

Testing Checklist

Please confirm you've tested the following:

• Changes display correctly on desktop (1920x1080 or similar)
• Changes display correctly on tablet (768x1024 or similar)
• Changes display correctly on mobile (375x667 or similar)
• Tested in light theme
• Tested in dark theme
• No broken links or images
• No console errors
• Ran bundle exec jekyll serve locally without errors

Screenshots (if applicable)

Related Issues

Additional Notes

Minor content update

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By submitting this PR, I confirm:

• I have tested these changes locally
• I have followed the code standards in DEVELOPMENT.md
• I have updated documentation if needed
• I am ready for this to be reviewed and merged