Fix: correct links on the FAQ page

[ssimkani]

Because

This pull request fixes broken links on the FAQ page under Which technologies can one expect to learn from The Odin Project? that redirect to 404Page. With this change, the links will direct the user to the correct pages.

This PR

Links that have been fixed:

• Foundations course
• Ruby on Rails
• NodeJS
• Both HTML and CSS links
• Both Javascript links

Issue

Related to #4515

Pull Request Requirements

• [x] I have thoroughly read and understand The Odin Project Contributing Guide
• [x] The title of this PR follows the keyword: brief description of change format, using one of the following keywords:
  • Feature - adds new or amends existing user-facing behavior
  • Chore - changes that have no user-facing value, refactors, dependency bumps, etc
  • Fix - bug fixes
• [x] The Because section summarizes the reason for this PR
• [x] The This PR section has a bullet point list describing the changes in this PR
• [x] I have verified all tests and linters pass after making these changes.
• [x] If this PR addresses an open issue, it is linked in the Issue section
• [x] If applicable, this PR includes new or updated automated tests

[MaoShizhong]

Thanks for opening this PR, @ssimkani. I will be closing this one without merging, as the linked issue had already been assigned to someone for work. As per our contributing guide, please do not open a PR for an open issue unless you have been assigned to work on it. This is a standard practice for OSS contributing, just for future reference.

[ssimkani]

Okay, thank you for letting me know! I'll make sure to check assignment status before creating any future PRs.

[MaoShizhong]

No problem, thanks for understanding!