feat: Update Hero Section Content for Better Engagement

[akshay0611]

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

Changes Made:

• Rewrote <h1 class="h1 hero-title"> to emphasize innovation and the future of digital finance.
• Rewrote <p class="hero-text"> to highlight seamless, secure, and fast crypto transactions.
• Improved the alt attribute for the banner image 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 hero section and its content.

Related Issue: Closes #2