Add Alex Kim to about page

[dkim232]

*** TODO: Please fill out all below TODOs and testing checks below before making a pull request! Skip/delete sections at your own discretion. ***

📝 Summary

Added Alex Kim to the About Page

🔍 Change Log

semesterly/templates/about.html

⚠️ Base Testing

Please fill in the following required testing steps with a checkbox (✅) before making this PR, or indicate why they are not necessary for this change:

[✅] docker-compose build && docker-compose up and the https://jhu.sem.ly endpoint works successfully

[✅] Semesterly CI successful

[✅] Backend linter successful

[✅] TSLint successful

🧪 Other Testing Steps

N/A

💻 Local Testing Instructions

Navigate to /about and verify Alex Kim appears in the current team section.

To test locally from a forked repo, run:

git fetch https://github.com/<username>/<fork-repo>.git <branch-name>:pr-<PR_NUMBER> && git checkout pr-<PR_NUMBER>

Please contact the owner of the fork in case the fork's branches are not publically accessible.