970731: MindMap exampe added

Author: ParameshwaranSF4845

UG-Samples/Layout/MindmapOrientationRuntime/MindmapOrientationRuntime/Pages/Index.razor

@@ -71,7 +71,7 @@
     {
         if (obj is not Node node) 
             return;
-        // Apply default node styling
+        // Apply default node styling.
         node.Height = 100;
         node.Width = 100;
         node.BackgroundColor = "#6BA5D7";