[semantics] fix dartdoc grammar (flutter#53121)

yjbanov · web-flow · commit 4956e98ab4cc · 2024-05-30T22:22:19.000Z
Courtesy of @gspencergoog: "which widget" is korrecter than "what widget".
diff --git a/lib/ui/semantics.dart b/lib/ui/semantics.dart
@@ -209,7 +209,7 @@ class SemanticsAction {
 
   /// Move the input focus to the respective widget.
   ///
-  /// Most commonly, the input focus determines what widget will receive
+  /// Most commonly, the input focus determines which widget will receive
   /// keyboard input. Semantics nodes that can receive this action are expected
   /// to have [SemanticsFlag.isFocusable] set. Examples of such focusable
   /// widgets include buttons, checkboxes, switches, and text fields.
