Force link in header for now

Author: lcharette

app/templates/content/navigation/navbar.html.twig

@@ -2,7 +2,7 @@
 
 {{ navbar.link('Features', 'https://www.userfrosting.com/features') }}
 {{ navbar.link('Demo', 'https://demo.userfrosting.com/') }}
-{{ navbar.link('Docs', '', true) }}
+{{ navbar.link('Docs', 'https://learn6.userfrosting.com', true) }}
 {{ navbar.link('Forums', 'https://github.com/orgs/userfrosting/discussions') }}
 {{ navbar.link('Chat', 'https://chat.userfrosting.com/') }}
 {{ navbar.link('Github', 'https://github.com/userfrosting') }}