Add github-handle for Muyin Zheng in home-unite-us.md

[izma-mujeeb]

Fixes #7190

What changes did you make?

• Using spaces, I added a variable named github-handle to hold Muyin Zheng's github handle

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

• The reason why I had to add a github-handle variable was because eventually this variable is going to replace the github and picture variables for each member in the leadership team. By adding this variable, I am reducing redundancy and ensuring the code in the project file is efficient.

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]

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

git checkout -b izma-mujeeb-add-github-handle-7190 gh-pages
git pull https://github.com/izma-mujeeb/website.git add-github-handle-7190

[FamousHero]

i. Availability: Mon-Fri: 5pm-6pm
ii. ETA: EOD 9/11/24

[tamara-snyder]

Review ETA: End of day 9/10/2024
Availability: Evenings

[tamara-snyder]

This looks great! I see you added the github-handle line using spaces and the appearance of the website hasn't changed. Well done :)

[FamousHero]

Hi @izma-mujeeb, every looks great!
branch name is descriptive and has issue # in it. Clear and concise change description and reason.
Keep up the good work!

[Thinking-Panda]

@izma-mujeeb Nice work on this issue!