Improve landing page

Author: niechen

pages/_includes/nav.html

@@ -7,7 +7,7 @@
                 <a href="/registry/" class="nav-link {% if page.url contains '/registry/' %}active{% endif %}">Registry</a>
             </div>
             <div class="right-links">
-                <a href="https://github.com/pathintegral-institute/mcpm.sh/blob/main/CONTRIBUTING.md" target="_blank" class="nav-link">
+                <a href="https://github.com/pathintegral-institute/mcpm.sh#-community-contributions" target="_blank" class="nav-link">
                     Contribute
                     <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" style="margin-left: 5px; vertical-align: -3px;">
                         <path d="M9 19c-5 1.5-5-2.5-7-3m14 6v-3.87a3.37 3.37 0 0 0-.94-2.61c3.14-.35 6.44-1.54 6.44-7A5.44 5.44 0 0 0 20 4.77 5.07 5.07 0 0 0 19.91 1S18.73.65 16 2.48a13.38 13.38 0 0 0-7 0C6.27.65 5.09 1 5.09 1A5.07 5.07 0 0 0 5 4.77a5.44 5.44 0 0 0-1.5 3.78c0 5.42 3.3 6.61 6.44 7A3.37 3.37 0 0 0 9 18.13V22"></path>