chore: rename demo files.

src/Shared/HandyControlDemo_Shared/UserControl/Controls/ClockDemo.xaml

@@ -0,0 +1,14 @@
+<UserControl x:Class="HandyControlDemo.UserControl.ClockDemoCtl"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:hc="https://handyorg.github.io/handycontrol"
+             Background="{DynamicResource RegionBrush}">
+    <hc:TransitioningContentControl>
+        <hc:ScrollViewer IsInertiaEnabled="True">
+            <hc:UniformSpacingPanel Spacing="16" ChildWrapping="Wrap" Margin="32">
+                <hc:Clock/>
+                <hc:ListClock/>
+            </hc:UniformSpacingPanel>
+        </hc:ScrollViewer>
+    </hc:TransitioningContentControl>
+</UserControl>