Update README.md

documentation(DOC-3343): KB link

Author: 9629976110

How-to-add-a-new-row-continuously-without-any-selection-to-next-row-in-wpf-datagrid/README.md

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 This sample show cases how to add a new row continuously in AddNewRow without moving the selection to next row in [WPF DataGrid](https://www.syncfusion.com/wpf-controls/datagrid) (SfDataGrid).
 
 When pressing the Enter key or Tab key in AddNewRow the selection will be moved to next row at once the new row has been added in [WPF DataGrid](https://www.syncfusion.com/wpf-controls/datagrid) (SfDataGrid). You can skip this selection using `CurrentCellActivated` event
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+KB article - [How to add a new row continuously without any selection to next row in WPF DataGrid (SfDataGrid)?](https://www.syncfusion.com/kb/6867/how-to-add-a-new-row-continuously-without-any-selection-to-next-row-in-wpf-datagrid)