add dashboard link to navbar

Author: humford

fern/docs.yml

@@ -55,7 +55,7 @@ navbar-links:
   - type: filled
     text: Dashboard
     rightIcon: fa-solid fa-chevron-right
-    href: https://example.com/login
+    href: https://dashboard.vapi.ai/
     rounded: true
 footer-links: 
   github: https://github.com/vapiai