Update RectExample.cs

Correct typo

Author: mikkelbu

snippets/csharp/System.Windows/Rect/Overview/RectExample.cs

@@ -23,7 +23,7 @@ public RectExample()
             // 150 wide. The left side of the rectangle is 10 pixels from the left of the 
             // Canvas and the top side of the rectangle is 100 pixels from the top of the Canvas.  
             // Note: You could alternatively use the Rect Constructor to create this:
-            // Rect my Rect1 = new Rect(10,100,150,100");
+            // Rect myRect1 = new Rect(10,100,150,100");
             Rect myRect1 = new Rect();
             myRect1.X = 10;
             myRect1.Y = 100;