remove comment from contributing.md

[jackyuan1]

Fixes #5589

What changes did you make?

• Removed old comment from contributing.md 1.6

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

• For Reviewers: Do not review changes locally, rather review changes at https://github.com/jackyuan1/website/blob/remove-comment-contributing-5589/CONTRIBUTING.md#16b-stopping-docker
• Outdated and confusing information

Screenshots of Proposed Changes Of The Website (if any, please do not screen shot code changes)

Visuals before changes are applied

Visuals after changes are applied

[github-actions]

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

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

git checkout -b jackyuan1-remove-comment-contributing-5589 gh-pages
git pull https://github.com/jackyuan1/website.git remove-comment-contributing-5589

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Note that CONTRIBUTING.md cannot previewed locally; rather it should be previewed at this URL:

https://github.com/jackyuan1/website/blob/remove-comment-contributing-5589/CONTRIBUTING.md  

[KyleA99]

I think your "after-images" in the PR description are of the wrong section, but all of the other content of the PR is correct.

• Your PR is done with the correct branch.
• Your code is correctly changed.
• Changes look great in your live-link.

Reviewed and approved!

Great work @jackyuan1

[tonyvang]

Review ETA: will take a look tomorrow evening
Availability: Tuesday evening, Wednesday evening

[tonyvang]

Your pull request is branched appropriately, has the issue linked, includes appropriately changed code that appears to make the intended visual change to the wiki page. I was also a little thrown off by the after screenshot as @KyleA99 mentioned, but I can see that the last line of text from before the removed note is visible at the top of the screenshot, showing that the note was removed. Well done and thank you for contributing! Approved.