chore: rename demo class names.

Author: NaBian

src/Avalonia/HandyControlDemo_Avalonia/Data/DemoInfo.json

@@ -1,7 +1,7 @@
 <UserControl xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:hc="https://handyorg.github.io/handycontrol"
-             x:Class="HandyControlDemo.UserControl.BorderDemoCtl"
+             x:Class="HandyControlDemo.UserControl.BorderDemo"
              Background="{DynamicResource RegionBrush}">
     <ScrollViewer>
         <hc:UniformSpacingPanel Margin="32"

src/Avalonia/HandyControlDemo_Avalonia/UserControl/Styles/BorderDemo.axaml

@@ -1,8 +1,8 @@
 namespace HandyControlDemo.UserControl;
 
-public partial class BorderDemoCtl : Avalonia.Controls.UserControl
+public partial class BorderDemo : Avalonia.Controls.UserControl
 {
-    public BorderDemoCtl()
+    public BorderDemo()
     {
         InitializeComponent();
     }

src/Avalonia/HandyControlDemo_Avalonia/UserControl/Styles/BorderDemo.axaml.cs

@@ -1,7 +1,7 @@
 <UserControl xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:hc="https://handyorg.github.io/handycontrol"
-             x:Class="HandyControlDemo.UserControl.BrushDemoCtl"
+             x:Class="HandyControlDemo.UserControl.BrushDemo"
              Background="{DynamicResource RegionBrush}">
     <ScrollViewer>
         <hc:UniformSpacingPanel ChildWrapping="Wrap"

src/Avalonia/HandyControlDemo_Avalonia/UserControl/Styles/BrushDemo.axaml

@@ -1,8 +1,8 @@
 namespace HandyControlDemo.UserControl;
 
-public partial class BrushDemoCtl : Avalonia.Controls.UserControl
+public partial class BrushDemo : Avalonia.Controls.UserControl
 {
-    public BrushDemoCtl()
+    public BrushDemo()
     {
         InitializeComponent();
     }

src/Avalonia/HandyControlDemo_Avalonia/UserControl/Styles/BrushDemo.axaml.cs

@@ -1,6 +1,6 @@
 <UserControl xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             x:Class="HandyControlDemo.UserControl.ButtonDemoCtl"
+             x:Class="HandyControlDemo.UserControl.ButtonDemo"
              xmlns:hc="https://handyorg.github.io/handycontrol"
              Background="{DynamicResource RegionBrush}">
     <ScrollViewer>

src/Avalonia/HandyControlDemo_Avalonia/UserControl/Styles/ButtonDemo.axaml

@@ -1,8 +1,8 @@
 namespace HandyControlDemo.UserControl;
 
-public partial class ButtonDemoCtl : Avalonia.Controls.UserControl
+public partial class ButtonDemo : Avalonia.Controls.UserControl
 {
-    public ButtonDemoCtl()
+    public ButtonDemo()
     {
         InitializeComponent();
     }

src/Avalonia/HandyControlDemo_Avalonia/UserControl/Styles/ButtonDemo.axaml.cs

@@ -1,6 +1,6 @@
 <UserControl xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             x:Class="HandyControlDemo.UserControl.CheckBoxDemoCtl">
+             x:Class="HandyControlDemo.UserControl.CheckBoxDemo">
     <StackPanel Margin="32"
                 HorizontalAlignment="Center"
                 VerticalAlignment="Center">

src/Avalonia/HandyControlDemo_Avalonia/UserControl/Styles/CheckBoxDemo.axaml

@@ -1,8 +1,8 @@
 namespace HandyControlDemo.UserControl;
 
-public partial class CheckBoxDemoCtl : Avalonia.Controls.UserControl
+public partial class CheckBoxDemo : Avalonia.Controls.UserControl
 {
-    public CheckBoxDemoCtl()
+    public CheckBoxDemo()
     {
         InitializeComponent();
     }

src/Avalonia/HandyControlDemo_Avalonia/UserControl/Styles/CheckBoxDemo.axaml.cs

@@ -1,6 +1,6 @@
 <UserControl xmlns="https://github.com/avaloniaui"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
-             x:Class="HandyControlDemo.UserControl.NativeScrollViewerDemoCtl"
+             x:Class="HandyControlDemo.UserControl.NativeScrollViewerDemo"
              xmlns:hc="https://handyorg.github.io/handycontrol"
              Background="{DynamicResource RegionBrush}"
              MaxWidth="550"