Add extra mode to sample description

Microsoft.Toolkit.Uwp.SampleApp/SamplePages/samples.json

@@ -479,7 +479,7 @@
       {
         "Name": "ConstrainedBox",
         "Subcategory": "Layout",
-        "About": "The ConstrainedBox is a FrameworkElement which can allow a developer to constrain the scale or aspect ratio of its content.",
+        "About": "The ConstrainedBox is a FrameworkElement which can allow a developer to constrain the scale, multiple of, or aspect ratio of its content.",
         "CodeUrl": "https://github.com/CommunityToolkit/WindowsCommunityToolkit/tree/main/Microsoft.Toolkit.Uwp.UI.Controls.Primitives/ConstrainedBox",
         "XamlCodeFile": "/SamplePages/Primitives/ConstrainedBox.bind",
         "Icon": "/SamplePages/Primitives/ConstrainedBox.png",