Add API docs to main navigation

Author: kum-deepak

_data/navigation.yml

@@ -1,9 +1,11 @@
 main:
   - title: "Getting Started"
     url: /guide/stompjs/using-stompjs-v5.html
-  - title: "FAQs"
-    url: /faqs/faqs.html
   - title: "Upgrade"
     url: /guide/stompjs/upgrading-stompjs.html
+  - title: "APIs"
+    url: /api-docs/latest/
+  - title: "FAQs"
+    url: /faqs/faqs.html
   - title: "Github"
     url: "https://github.com/stomp-js"