Fix Typo (#4510)

"Proriity" should be "Priority"

Author: JerichoKain

samples/snippets/csharp/VS_Snippets_Wpf/DataTemplatingIntro_snip/CSharp/Window1.xaml

@@ -89,7 +89,7 @@
       </ItemsControl.ItemsPanel>
       <!--Use the ItemTemplate to set a DataTemplate to define
           the visualization of the data objects. This DataTemplate
-          specifies that each data object appears with the Proriity
+          specifies that each data object appears with the Priority
           and TaskName on top of a silver ellipse.-->
       <ItemsControl.ItemTemplate>
         <DataTemplate>
@@ -169,4 +169,4 @@
     <!--<SnippetUI2>-->
   </StackPanel>
 </Window>
-<!--</SnippetUI2>-->
+<!--</SnippetUI2>-->