feat: Update Footer Lists Content for Better Engagement

[akshay0611]

Summary: This PR updates the content of the footer lists to improve clarity, relevance, and engagement. The changes aim to better communicate the platform's strengths and value proposition.

Changes Made:

• Rewrote <p class="footer-list-title"> to make titles more inviting and descriptive.
• Rewrote <a class="footer-link"> to highlight specific courses, resources, and support options.
• Ensured alignment with existing CSS styles and framework conventions.

Testing:

• Verified responsiveness across different screen sizes.
• Ensured proper rendering of the footer lists and their content.

Related Issue: Closes #17