docs: N Preview 1 Landing Page fixes

- minor fixes for Preview Landing page, Resource section

Change-Id: I8116966ba06f6778cb976d7919836fd0d6154e33
diff --git a/docs/html/jd_collections.js b/docs/html/jd_collections.js
index 3a17f05..cfa9fa2 100644
--- a/docs/html/jd_collections.js
+++ b/docs/html/jd_collections.js
@@ -147,6 +147,14 @@
       "preview/support.html"
     ]
   },
+  "preview/landing/more": {
+    "title": "",
+    "resources": [
+      "preview/features/multi-window.html",
+      "preview/features/background-optimization.html",
+      "preview/features/notification-updates.html"
+    ]
+  },
   "google/landing/services": {
     "title": "",
     "resources": [