Fix TargetObject's dependency property owner type in StartAnimationAction

Author: AndrewKeepCoding

components/Behaviors/src/Animations/StartAnimationAction.cs

@@ -45,7 +45,7 @@ public UIElement TargetObject
     public static readonly DependencyProperty TargetObjectProperty = DependencyProperty.Register(
         nameof(TargetObject),
         typeof(UIElement),
-        typeof(StartAnimationActivity),
+        typeof(StartAnimationAction),
         new PropertyMetadata(null));
 
     /// <inheritdoc/>