[Enhancement]: Add Hover Underline Effect to Phone and Email Links

[akshay0611]

Problem:
The current phone number and email links in the contact list lack visual feedback when hovered over. Adding a hover effect would improve the user experience by making the links more interactive and visually appealing.

Proposed Solution:

• Add a hover effect that underlines the phone number and email links when hovered over.
• Use inline CSS to remove the default underline and a <style> block to implement the hover effect.

Expected Outcome:
A more interactive and user-friendly contact list where phone and email links are visually highlighted on hover.