docs: add navigation to Angular features doc

docs/en/UI/Angular/Settings.md

@@ -56,4 +56,4 @@ Beware though, **settings search is case-sensitive**.
 
 ## What's Next?
 
-- [Permission Management](./Permission-Management.md)
+- [Features](./Features.md)

docs/en/docs-nav.json

@@ -588,6 +588,10 @@
                   "text": "Settings",
                   "path": "UI/Angular/Settings.md"
                 },
+                {
+                  "text": "Features",
+                  "path": "UI/Angular/Features.md"
+                },
                 {
                   "text": "Permission Management",
                   "path": "UI/Angular/Permission-Management.md"