chore: fix xaml

Author: rajamatt

reference/Counter/XAML-MVUX/Counter/MainPage.xaml

@@ -1,4 +1,4 @@
-<Page
+<Page
 	x:Class="Counter.MainPage"
 	xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
 	xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
@@ -35,4 +35,4 @@
 			Command="{Binding IncrementCounter}"
 			Content="Increment Counter by Step Size" />
 	</StackPanel>
-</Page>
+</Page>