samples.json: Make CodeUrl values more specific to samples

Microsoft.Toolkit.Uwp.SampleApp/SamplePages/samples.json

@@ -539,7 +539,7 @@
         "Subcategory": "Activities",
         "Icon": "/Assets/Helpers.png",
         "About": "Activity chaining Actions from the Behaviors package into an Animation schedule.",
-        "CodeUrl": "https://github.com/CommunityToolkit/WindowsCommunityToolkit/tree/main/Microsoft.Toolkit.Uwp.UI.Behaviors/Animations",
+        "CodeUrl": "https://github.com/CommunityToolkit/WindowsCommunityToolkit/tree/main/Microsoft.Toolkit.Uwp.UI.Behaviors/Animations/InvokeActionsActivity.cs",
         "CodeFile": "/SamplePages/Animations/Activities/InvokeActionsActivityCode.bind",
         "XamlCodeFile": "/SamplePages/Animations/Activities/InvokeActionsActivity.bind",
         "DocumentationUrl": "https://raw.githubusercontent.com/MicrosoftDocs/WindowsCommunityToolkitDocs/master/docs/animations/AnimationSet.md"
@@ -628,7 +628,7 @@
         "Type": "ItemsReorderAnimationPage",
         "Subcategory": "Effect",
         "About": "Animates items of a grid or list control when the size changes",
-        "CodeUrl": "https://github.com/CommunityToolkit/WindowsCommunityToolkit/tree/main/Microsoft.Toolkit.Uwp.UI.Animations",
+        "CodeUrl": "https://github.com/CommunityToolkit/WindowsCommunityToolkit/blob/main/Microsoft.Toolkit.Uwp.UI.Animations/ItemsReorderAnimation.cs",
         "XamlCodeFile": "ItemsReorderAnimation.bind",
         "Icon": "/SamplePages/ItemsReorderAnimation/ItemsReorderAnimation.png",
         "DocumentationUrl": "https://raw.githubusercontent.com/MicrosoftDocs/WindowsCommunityToolkitDocs/master/docs/animations/ItemsReorderAnimation.md"