ReadMe updated with KB link

jayaleshwari · web-flow · commit a8930143f0ae · 2020-12-03T10:38:25.000+05:30
diff --git a/README.md b/README.md
@@ -1,2 +1 @@
-# deselect-selected-date-flutter-date-range-picker
-How to deselect the selected date in the Flutter date range picker (SfDateRangePicker)
+**[View document in Syncfusion Flutter Knowledge base](https://www.syncfusion.com/kb/12138/how-to-deselect-the-selected-date-in-the-flutter-date-range-picker-sfdaterangepicker)**

Original file line number	Diff line number	Diff line change
`@@ -1,2 +1 @@`
`1`		`-# deselect-selected-date-flutter-date-range-picker`
`2`		`-How to deselect the selected date in the Flutter date range picker (SfDateRangePicker)`
	`1`	`+[View document in Syncfusion Flutter Knowledge base](https://www.syncfusion.com/kb/12138/how-to-deselect-the-selected-date-in-the-flutter-date-range-picker-sfdaterangepicker)`