Change donate to support ❤️ in the main menu

Author: gauravkukade

_layouts/default.html

@@ -80,7 +80,7 @@
                 </li>
 
                 <li class="nav-item">
-                    <a target="_blank" class="nav-link" href="https://www.paypal.me/GauravKukade">Donate</a>
+                    <a target="_blank" class="nav-link" href="https://www.paypal.me/GauravKukade">Support ❤️</a>
                 </li>
 
                 {% include search-lunr.html %}