add github handle, Hyun Joo Sandy Oh

[k-cardon]

Fixes #7242

What changes did you make?

• adds github-handle variable for Hyun Joo Sandy Oh in tech-work-experience.md

Why did you make the changes (we will use this info to test)?

• fixing technical debt

Screenshots of Proposed Changes To The Website (if any, please do not include screenshots of code changes)

No visual changes to the website

[github-actions]

Want to review this pull request? Take a look at this documentation for a step by step guide!

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From your project repository, check out a new branch and test the changes.

git checkout -b k-cardon-github-handle-7242 gh-pages
git pull https://github.com/k-cardon/hack4LA-website.git github-handle-7242

[bexux]

Availability: M-F 6-7pm PST
ETA: now

[bexux]

Great job! Branch is correct, PR description reads well, correct changes ere made to the correct file. Approved.

[jphamtv]

Hi @k-cardon,

• You created the pull request using the correct branch
• The issue is properly linked to the pull request
• Your code change correctly uses spaces instead of tabs

One minor suggestion for future PRs: Provide a more specific summary for the "Why did you make the changes?" question. You can usually get this from the Overview section in the issue. For example, for this one I would comment: "Add github-handle variable to reduce redundancy."

Good work and thanks for your contribution to resolving this issue!