Fixed typos (#159331)

Here's another one of my PRs where I hunt for typos across `flutter`
repo.

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we expect every widget to implement].
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- [ ] I listed at least one issue that this PR fixes in the description
above.
- [ ] I updated/added relevant documentation (doc comments with `///`).
- [ ] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] All existing and new tests are passing.

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examples/api/lib/widgets/scroll_end_notification/scroll_end_notification.1.dart

@@ -53,7 +53,7 @@ class _SliverAutoScrollExampleState extends State<SliverAutoScrollExample> {
 
   // After an interactive scroll ends, if the alignedItem is partially visible
   // at the top or bottom of the viewport, then auto-scroll so that it's
-  // completely visible. To accomodate mouse-wheel scrolls and other small
+  // completely visible. To accommodate mouse-wheel scrolls and other small
   // adjustments, scrolls that change the scroll offset by less than
   // the alignedItem's extent don't trigger an auto-scroll.
   void maybeAutoScrollAlignedItem(RenderSliver alignedItem) {

examples/api/lib/widgets/scroll_position/is_scrolling_listener.0.dart

@@ -56,7 +56,7 @@ class _IsScrollingListenerExampleState extends State<IsScrollingListenerExample>
   }
 
   // After an interactive scroll "ends", auto-scroll so that last item in the
-  // viewport is completely visible. To accomodate mouse-wheel scrolls, other small
+  // viewport is completely visible. To accommodate mouse-wheel scrolls, other small
   // adjustments, and scrolling to the top, scrolls that put the scroll offset at
   // zero or change the scroll offset by less than itemExtent don't trigger
   // an auto-scroll.

examples/api/lib/widgets/sliver/pinned_header_sliver.1.dart

@@ -45,7 +45,7 @@ class _SettingsAppBarExampleState extends State<SettingsAppBarExample> {
 
   // The key must be for a widget _below_ a RenderSliver so that
   // findAncestorRenderObjectOfType can find the RenderSliver when it searches
-  // the key widget's renderer ancesotrs.
+  // the key widget's renderer ancestors.
   RenderSliver? keyToSliver(GlobalKey key) => key.currentContext?.findAncestorRenderObjectOfType<RenderSliver>();
 
   // Each time the app's list scrolls: if the Title sliver has scrolled completely behind

examples/api/test/widgets/scroll_end_notification/scroll_end_notification.1_test.dart

@@ -15,7 +15,7 @@ void main() {
     final double itemHeight = tester.getSize(find.widgetWithText(Card, 'Item 0.15')).height;
 
     // The scroll view is 600 pixels high and the big orange
-    // "AlignedItem" is precedeed by 15 regular items. Scroll up enough
+    // "AlignedItem" is preceded by 15 regular items. Scroll up enough
     // to make it partially visible.
     await tester.drag(find.byType(CustomScrollView), Offset(0, 600 - 15.5 * itemHeight));
     await tester.pumpAndSettle();

examples/api/test/widgets/shortcuts/shortcuts.1_test.dart

@@ -55,7 +55,7 @@ void main() {
   });
 
   // Regression test for https://github.com/flutter/flutter/issues/156806.
-  testWidgets('SingleActivator is used instead of LogiccalKeySet', (WidgetTester tester) async {
+  testWidgets('SingleActivator is used instead of LogicalKeySet', (WidgetTester tester) async {
     await tester.pumpWidget(
       const example.ShortcutsExampleApp(),
     );