Replace flutter.io with flutter.dev (#30562)

diff --git a/packages/flutter_tools/lib/src/commands/create.dart b/packages/flutter_tools/lib/src/commands/create.dart
index 17fffae..5118df7 100644
--- a/packages/flutter_tools/lib/src/commands/create.dart
+++ b/packages/flutter_tools/lib/src/commands/create.dart
@@ -407,7 +407,7 @@
 Your plugin code is in $relativePluginMain.
 
 Host platform code is in the "android" and "ios" directories under $relativePluginPath.
-To edit platform code in an IDE see https://flutter.io/developing-packages/#edit-plugin-package.
+To edit platform code in an IDE see https://flutter.dev/developing-packages/#edit-plugin-package.
 ''');
         }
       } else {