ReadMe updated with KB link

jayaleshwari · web-flow · commit 9c8926340688 · 2021-02-11T12:21:21.000+05:30
diff --git a/README.md b/README.md
@@ -1,2 +1 @@
-# select-all-days-of-header-flutter-date-range-picker
-How to select all days when clicking on the day header in the Flutter date range picker (SfDateRangePicker)
+**[View document in Syncfusion Flutter Knowledge base](https://www.syncfusion.com/kb/12353/how-to-select-all-days-when-clicking-on-the-day-header-in-the-flutter-date-range-picker)**

Original file line number	Diff line number	Diff line change
`@@ -1,2 +1 @@`
`1`		`-# select-all-days-of-header-flutter-date-range-picker`
`2`		`-How to select all days when clicking on the day header in the Flutter date range picker (SfDateRangePicker)`
	`1`	`+[View document in Syncfusion Flutter Knowledge base](https://www.syncfusion.com/kb/12353/how-to-select-all-days-when-clicking-on-the-day-header-in-the-flutter-date-range-picker)`