Update SwiftUIIntrospect.md [skip ci]

Author: davdroman

docs/SwiftUIIntrospect.md

@@ -102,6 +102,7 @@ Introspection
 - [`List` with `.inset` style](https://swiftpackageindex.com/siteline/swiftui-introspect/master/documentation/swiftuiintrospect/listwithinsetstyletype)
 - [`List` with `.sidebar` style](https://swiftpackageindex.com/siteline/swiftui-introspect/master/documentation/swiftuiintrospect/listwithsidebarstyletype)
 - [`ListCell`](https://swiftpackageindex.com/siteline/swiftui-introspect/master/documentation/swiftuiintrospect/listcelltype)
+- [`NavigationSplitView`](https://swiftpackageindex.com/siteline/swiftui-introspect/master/documentation/swiftuiintrospect/navigationsplitviewtype)
 - [`NavigationStack`](https://swiftpackageindex.com/siteline/swiftui-introspect/master/documentation/swiftuiintrospect/navigationstacktype)
 - [`NavigationView` with `.columns` style](https://swiftpackageindex.com/siteline/swiftui-introspect/master/documentation/swiftuiintrospect/NavigationViewWithColumnsStyleType)
 - [`NavigationView` with `.stack` style](https://swiftpackageindex.com/siteline/swiftui-introspect/master/documentation/swiftuiintrospect/NavigationViewWithStackStyleType)