Add External Links to Social Media Icons

[Mujahid087]

Pull Request Description:

This pull request updates the social media section of the website by adding external links to the respective platforms. Each icon now links to a specific social media profile, ensuring users can navigate to the intended pages directly. The following changes have been made:

Changes Made:

1. Replaced placeholder href="#" values with actual URLs for LinkedIn ,Facebook ,Twitter (updated X icon), Instagram ,Pinterest.
2. Added target="_blank" to open links in a new tab for better user experience.
3. Included rel="noopener noreferrer" for improved security and performance.

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