new whatsapp link (#919)

Author: gellowg

_data/links.yml

@@ -30,6 +30,10 @@
   url: /discord
   image: /assets/images/discord-logo.png
 
+- text: Join our WhatsApp group
+  url: https://chat.whatsapp.com/HA2wW0rxk9lH7DmNDXrsBB
+  image: /assets/images/whatsapp-logo.png
+
 - text: Follow us on Instagram
   url: /instagram
   image: /assets/images/instagram-logo.png