hides ecosystem-apps page from sidebar

remove 'hidden' property after updated

Author: cordt-sei

pages/_meta.json

@@ -16,9 +16,8 @@
   "user-quickstart": "Quickstart",
   "user-guides": "User Guides",
   "user-FAQ": "FAQ",
-  "user-ecosystem-apps": {
-    "title": "Ecosystem Apps",
-    "hidden": true
+  "user-ecosystem-apps" : {
+    "display": "hidden"
   },
   "-- For Developers": {
     "type": "separator",