#19060 Update material.google.com links to material.io (#26807)

examples/README.md

diff --git a/examples/README.md b/examples/README.md
index 82e890e..3fa7a31 100644
--- a/examples/README.md
+++ b/examples/README.md
@@ -15,7 +15,7 @@
 
 - **Flutter gallery** The [flutter gallery app](flutter_gallery) showcases
   Flutter's widgets, including its implementation of [material
-  design](https://material.google.com/).
+  design](https://material.io/design/).
 
 - **Layers** The [layers vignettes](layers) show how to use the various layers
   in the Flutter framework. For details, see the [layers

examples/flutter_gallery/lib/demo/material/full_screen_dialog_demo.dart

diff --git a/examples/flutter_gallery/lib/demo/material/full_screen_dialog_demo.dart b/examples/flutter_gallery/lib/demo/material/full_screen_dialog_demo.dart
index 9c5fc2c..7d715ae 100644
--- a/examples/flutter_gallery/lib/demo/material/full_screen_dialog_demo.dart
+++ b/examples/flutter_gallery/lib/demo/material/full_screen_dialog_demo.dart
@@ -8,7 +8,7 @@
 import 'package:intl/intl.dart';
 
 // This demo is based on
-// https://material.google.com/components/dialogs.html#dialogs-full-screen-dialogs
+// https://material.io/design/components/dialogs.html#full-screen-dialog
 
 enum DismissDialogAction {
   cancel,