Update README.md

Author: SreemonPremkumarM

README.md

@@ -1,8 +1,8 @@
-# How to discard all changes
+# How to Discard all the Changes in WPF Spreadsheet?
 
-This sample explains how to undo and redo all the unsaved changes in [WPF Spreadsheet](https://www.syncfusion.com/wpf-controls/spreadsheet).
+This sample explains how to undo and redo all the unsaved changes in [WPF Spreadsheet](https://www.syncfusion.com/wpf-controls/spreadsheet) (SfSpreadsheet).
 
-By default, all the unsaved changes are maintained in the `UndoStack` commands collection.  To discard all the unsaved changes programmatically, `Execute` the all commands in `UndoStack` collection. By executing the commands in `RedoStack` commands collection, all the discarded changes can be retrieved.
+By default, all the unsaved changes are maintained in the **UndoStack** commands collection.  To discard all the unsaved changes programmatically, **Execute** the all commands in **UndoStack** collection. By executing the commands in **RedoStack** commands collection, all the discarded changes can be retrieved.
 
 ``` c#
 //UndoAll the changes
@@ -24,4 +24,4 @@ while (this.spreadsheetControl.HistoryManager.RedoStack.Count > 0)
         redo.Execute(Syncfusion.UI.Xaml.Spreadsheet.History.CommandMode.Redo); 
     }
 }
-```
+```