Add support for markdown links in paragraphs

Support clickable markdown links within paragraphs. Use regex to detect markdown link syntax ([text](url)) in paragraph content and render them as HTML tags with appropriate attributes. Links should be styled to match the classic underline design.

Ideas/Features:

• Detect and render markdown links as clickable elements.
• Ensure accessibility attributes like aria-label are added for screen readers.
• Add test cases to verify proper detection and rendering of links.