feat: Update Achievements Section Content for Better Engagement in Bookish

[akshay0611]

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

Changes Made:

• Rewrote <p class="card-text"> to highlight specific achievements and their focus areas.
• Improved alt attributes for images to enhance accessibility and SEO.
• Ensured alignment with existing CSS styles and framework conventions.

Testing:

• Verified responsiveness across different screen sizes.
• Ensured proper rendering of the achievements section and its content.

Related Issue: Closes #15