modified the single code snippet alignment

Author: tineshkumarsf4652

maui-toolkit/Cartesian-Charts/EmptyPoints.md

@@ -17,7 +17,7 @@ The data collection that is passed to the chart can have NaN or Null values that
 
 {% highlight C# %}
 
- ProductSales = new ObservableCollection<Model>();
+ProductSales = new ObservableCollection<Model>();
 ProductSales.Add(new Model() { Product = "Electronics", Sales = 60 });
 ProductSales.Add(new Model() { Product = "Clothing", Sales = 40 });
 ProductSales.Add(new Model() { Product = "Groceries", Sales = double.NaN });