Task(1049038): Updated 3d chart, smithchart, sparkline, sunburst chart

chart-sdk/wpf/SfChart3D/3DSeries.md

@@ -39,7 +39,7 @@ The following APIs are common for most of the series types:
 {% highlight xaml %}
 
 <chart:ColumnSeries3D 
-    ItemsSource="{Binding CategoricalData}" 
+    ItemsSource="{Binding CategoricalData}"         
     XBindingPath="Year" 
     YBindingPath="Metal">
 </chart:ColumnSeries3D>

chart-sdk/wpf/Sparkline/Overview.md

@@ -11,7 +11,7 @@ documentation: ug
 
 A sparkline is a very small chart, typically drawn without axes or coordinates. It presents the general shape of data in a simple and highly condensed way.
 
-### Key features
+## Key features
 
 * Data binding support.
 * Range band support.

chart-sdk/wpf/surface-chart/Data-Binding.md

@@ -54,7 +54,7 @@ You can apply the data to a surface in two ways.
 * Using the ItemsSource property.
 * Directly passing values through the Data.AddPoints method.
 
-### Using ItemsSource
+## Using ItemsSource
 
 You can bind the IEnumerable collection property to the [`ItemsSource`](https://help.syncfusion.com/cr/wpf/Syncfusion.UI.Xaml.Charts.SfSurfaceChart.html#Syncfusion_UI_Xaml_Charts_SfSurfaceChart_ItemsSource) property of a surface chart. Each item holds the model properties that are used to map the surface [`XBindingPath`](https://help.syncfusion.com/cr/wpf/Syncfusion.UI.Xaml.Charts.SfSurfaceChart.html#Syncfusion_UI_Xaml_Charts_SfSurfaceChart_XBindingPath), [`YBindingPath`](https://help.syncfusion.com/cr/wpf/Syncfusion.UI.Xaml.Charts.SfSurfaceChart.html#Syncfusion_UI_Xaml_Charts_SfSurfaceChart_YBindingPath), and [`ZBindingPath`](https://help.syncfusion.com/cr/wpf/Syncfusion.UI.Xaml.Charts.SfSurfaceChart.html#Syncfusion_UI_Xaml_Charts_SfSurfaceChart_ZBindingPath) properties. 
 
@@ -120,7 +120,7 @@ public class ViewModel
 {% endhighlight %}
 {% endtabs %}
 
-### Using Data.AddPoints method
+## Using Data.AddPoints method
 
 In this approach, you can directly pass the data points to the [`AddPoints(x, y, z)`](https://help.syncfusion.com/cr/wpf/Syncfusion.UI.Xaml.Charts.DataPointCollection.html#Syncfusion_UI_Xaml_Charts_DataPointCollection_AddPoints_System_Double_System_Double_System_Double_) method of the [`Data`](https://help.syncfusion.com/cr/wpf/Syncfusion.UI.Xaml.Charts.SfSurfaceChart.html#Syncfusion_UI_Xaml_Charts_SfSurfaceChart_Data) property. Here, you do not need to create an items source and its member path. However, you need to specify the data row and column size.
 

chart-sdk/wpf/surface-chart/Palettes.md

@@ -26,7 +26,7 @@ The predefined palettes include the following:
 * LightCandy
 * SandyBeach
 
-### Applying predefined brushes
+## Applying predefined brushes
 
 Using the above palettes, you can apply a set of predefined brushes to the surface chart as shown in the following code example. 
 
@@ -52,7 +52,7 @@ grid.Children.Add(chart);
 ![surface_chart_img12](surface_chart_images/surface_chart_img12.jpeg)
 
 
-### Applying custom brushes
+## Applying custom brushes
 
 The custom palette option enables you to define your own color brushes for the Palette using the ColorModel property, as shown in the following code example.
 

chart-sdk/wpf/surface-chart/Surface-Types.md

@@ -16,7 +16,7 @@ The Essential Surface Chart provides the following types to plot three-dimension
 * Contour 
 * WireframeContour
 
-### Surface
+## Surface
 
 Surface charts are used to explore the relationship between three-dimensional data. 
 
@@ -90,7 +90,7 @@ public class DataViewModel
 ![surface_chart_img8](surface_chart_images/surface_chart_img8.jpeg)
 
 
-### WireframeSurface
+## WireframeSurface
 
 You can draw the wireframe or mesh for the surface chart.
 
@@ -123,7 +123,7 @@ grid.Children.Add(chart);
 
 ![surface_chart_img9](surface_chart_images/surface_chart_img9.jpeg)
 
-### Contour
+## Contour
 
 Viewing the surface chart from the top is called a contour. It is a graphical technique that represents the three-dimensional surface in a two-dimensional format.  
 
@@ -186,7 +186,7 @@ The following code specifies the view model data bound to the chart for contour
 ![surface_chart_img10](surface_chart_images/surface_chart_img10.jpeg)
 
 
-### WireframeContour
+## WireframeContour
 
 You can draw the wireframe or mesh for the contour chart.
 

chart-sdk/wpf/treemap/Overview.md

@@ -11,7 +11,7 @@ documentation: ug
 
 TreeMaps are ideal for visualizing large amounts of data. The visualization space is split up into rectangles that are sized and colored based on the quantitative variables. The levels in the hierarchy of the tree map are visualized as rectangles containing other rectangles.
 
-### Use Cases
+## Use Cases
 
 Tree maps are used to represent large or complex data sets in various applications such as,