feat: Update service card content for better relevance

[akshay0611]

Summary: This PR updates the content of the service cards to improve clarity, relevance, and engagement. The changes aim to better communicate the value proposition of Doclab's medical services.

Changes Made:

• Rewrote the content of <p class="card-text"> for each service to highlight its unique benefits.
• Updated alt texts for icons to improve accessibility.
• Ensured alignment with existing CSS styles and framework conventions.

Testing:

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

Related Issue: Closes #3