A Very Brief Intro to CS: changed quora link to avoid confusing answer

[kol3x]

Because

As I mentioned in this issue there was a confusing answer showing by default in a quora question (that was linked in the assignment section of intro to CS lesson) about algorithms in web dev. I changed the link so it goes straight to an answer explaining the topic, instead of the whole question with quora algos to decide what answer to show.
I changed it both in JS and Ruby paths. And also changed the same link in the following "Knowledge check" section.

This PR

• In "A Very Brief Intro to CS" lesson of both Ruby and JS path, changed a link in both "Assignment" and "Knowledge check" lesson from a whole quora question to a specific answer.
• Fixed some minor layout issues in the Ruby version of the lesson.

Issue

Closes #26219

Additional Information

Pull Request Requirements

• I have thoroughly read and understand The Odin Project Contributing Guide
• The title of this PR follows the location of change: brief description of change format, e.g. Intro to HTML and CSS lesson: Fix link text
• The Because section summarizes the reason for this PR
• The This PR section has a bullet point list describing the changes in this PR
• If this PR addresses an open issue, it is linked in the Issue section
• If any lesson files are included in this PR, they have been previewed with the Markdown preview tool to ensure it is formatted correctly
• If any lesson files are included in this PR, they follow the Layout Style Guide