[PE] fix typo in `RoundedButtonGroup` class doc (#8852)

packages/devtools_app_shared/lib/src/ui/buttons.dart

diff --git a/packages/devtools_app_shared/lib/src/ui/buttons.dart b/packages/devtools_app_shared/lib/src/ui/buttons.dart
index fc8395c..2e09b34 100644
--- a/packages/devtools_app_shared/lib/src/ui/buttons.dart
+++ b/packages/devtools_app_shared/lib/src/ui/buttons.dart
@@ -268,7 +268,7 @@
 /// A group of buttons that share a common border.
 ///
 /// This widget ensures the buttons are displayed with proper borders on the
-/// interior and exterior of the group. The attirbutes for each button can be
+/// interior and exterior of the group. The attributes for each button can be
 /// defined by [ButtonGroupItemData] and included in [items].
 final class RoundedButtonGroup extends StatelessWidget {
   const RoundedButtonGroup({