Update Now page link to point directly to GitHub profile

Changed the Now navigation link from the local /now page to https://github.com/Xeeban.
This redirects visitors to the main source of "now" information on GitHub rather than
maintaining a summary on xeeban.com.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: anishi

src/layouts/Layout.astro

@@ -31,7 +31,7 @@ const { title } = Astro.props;
               <a href="/blog" class="text-gray-700 dark:text-gray-300 hover:text-gray-900 dark:hover:text-white transition-colors">
                 Blog
               </a>
-              <a href="/now" class="text-gray-700 dark:text-gray-300 hover:text-gray-900 dark:hover:text-white transition-colors">
+              <a href="https://github.com/Xeeban" target="_blank" rel="noopener noreferrer" class="text-gray-700 dark:text-gray-300 hover:text-gray-900 dark:hover:text-white transition-colors">
                 Now
               </a>
             </div>