Update README.md

Author: ThunderDesign

README.md

@@ -1,6 +1,6 @@
 # ThunderDesign.Net-PCL.ToolBox
 [![CI](https://github.com/ThunderDesign/ThunderDesign.Net-PCL.ToolBox/actions/workflows/CI.yml/badge.svg)](https://github.com/ThunderDesign/ThunderDesign.Net-PCL.ToolBox/actions/workflows/CI.yml)
-[![CD](https://github.com/ThunderDesign/ThunderDesign.Net-PCL.ToolBox/actions/workflows/CD.yml/badge.svg)](https://github.com/ThunderDesign/ThunderDesign.Net-PCL.ToolBox/actions/workflows/CD.yml)
+[![CD](https://github.com/ThunderDesign/ThunderDesign.Net-PCL.ToolBox/actions/workflows/CD.yml/badge.svg?event=release)](https://github.com/ThunderDesign/ThunderDesign.Net-PCL.ToolBox/actions/workflows/CD.yml)
 [![Nuget](https://img.shields.io/nuget/v/ThunderDesign.Net-PCL.ToolBox)](https://www.nuget.org/packages/ThunderDesign.Net-PCL.ToolBox)
 [![License](https://img.shields.io/github/license/ThunderDesign/ThunderDesign.Net-PCL.ToolBox)](https://github.com/ThunderDesign/ThunderDesign.Net-PCL.ToolBox/blob/main/LICENSE)
 [![Net](https://img.shields.io/badge/.net%20standard-v1.0%20--%20v2.1-blue)](https://github.com/ThunderDesign/ThunderDesign.Net-PCL.ToolBox/blob/main/README.md)