chore: fix typo in comments

Co-authored-by: Agnès ZITTE <16295702+agneszitte@users.noreply.github.com>

src/SamplesApp/UITests.Shared/Windows_Storage/Pickers/FileOpenPickerTests.xaml.cs

@@ -32,7 +32,7 @@ public FileOpenPickerTests()
 
 		private void FolderPickerTests_DataContextChanged(Microsoft.UI.Xaml.DependencyObject sender, Microsoft.UI.Xaml.DataContextChangedEventArgs args)
 		{
-			// When the picker is showing, the Page is reseting the DataContext to null.
+			// When the picker is showing, the Page is resetting the DataContext to null.
 			if (args.NewValue is FileOpenPickerTestsViewModel viewModel)
 			{
 				ViewModel = viewModel;