docs: update readme

Author: mob-sakai

README.md

@@ -14,7 +14,7 @@ Change the C# compiler (csc) used on your Unity project, as you like!
 ![](https://img.shields.io/badge/Unity%202020.x-supported-blue.svg)  
 ![GitHub Workflow Status](https://img.shields.io/github/workflow/status/mob-sakai/CSharpCompilerSettingsForUnity/unity-test)
 [![Test](https://mob-sakai.testspace.com/spaces/130862/badge?token=43a50d2fc998aa362d36934597de0c84527e5690)](https://mob-sakai.testspace.com/spaces/130862)
-[![CodeCoverage](https://mob-sakai.testspace.com/spaces/130862/metrics/99758/badge)](https://mob-sakai.testspace.com/spaces/130862/current/Code%20Coverage/Code%20Coverage")
+[![CodeCoverage](https://mob-sakai.testspace.com/spaces/130862/metrics/103206/badge)](https://mob-sakai.testspace.com/spaces/130862/current/Code%20Coverage)
 
 << [Description](#description) | [Installation](#installation) | [Usage](#usage) | [Contributing](#contributing) >>