 Make link secured to fix warning for flutter_simple_treeview. (#223)
 Make link secured to fix warning for flutter_simple_treeview. (#223)

PiperOrigin-RevId: 353420149

Co-authored-by: polinach <aad9186901c23a0f0df4aafb0d9d71877080ac70@google.com>
google/flutter.widgets,google/flutter.widgets