README auto update [skip ci]

Author: DevExpressExampleBot

README.md

@@ -1,3 +1,8 @@
+<!-- default badges list -->
+![](https://img.shields.io/endpoint?url=https://codecentral.devexpress.com/api/v1/VersionRange/309685103/20.2.3%2B)
+[![](https://img.shields.io/badge/Open_in_DevExpress_Support_Center-FF7200?style=flat-square&logo=DevExpress&logoColor=white)](https://supportcenter.devexpress.com/ticket/details/T945799)
+[![](https://img.shields.io/badge/📖_How_to_use_DevExpress_Examples-e9f6fc?style=flat-square)](https://docs.devexpress.com/GeneralInformation/403183)
+<!-- default badges end -->
 # getting-started-with-dropdownbutton
 <!-- run online -->
 **[[Run Online]](https://codecentral.devexpress.com/309685103/)**