docs(readme): add codecov badge (#757)

README.md

@@ -13,6 +13,7 @@
    <a href="https://www.nuget.org/packages?q=Microsoft.ComponentDetection"><img alt="Nuget" src="https://img.shields.io/nuget/v/Microsoft.ComponentDetection.Common"></a>
    <a href="https://github.com/microsoft/component-detection/actions/workflows/build.yml"><img alt="GitHub Workflow Status (with event)" src="https://github.com/microsoft/component-detection/actions/workflows/build.yml/badge.svg"></a>
    <a href="https://github.com/microsoft/component-detection/actions/workflows/codeql-analysis.yml"><img alt="GitHub CodeQL Status" src="https://github.com/microsoft/component-detection/actions/workflows/codeql-analysis.yml/badge.svg"></a>
+   <a href="https://codecov.io/gh/microsoft/component-detection"><img src="https://codecov.io/gh/microsoft/component-detection/graph/badge.svg"/></a>
    <a href="https://securityscorecards.dev/viewer/?uri=github.com/microsoft/component-detection"><img alt="OSSF-Scorecard Score" src="https://img.shields.io/ossf-scorecard/github.com/microsoft/component-detection"></a>
    <a href="https://github.com/microsoft/component-detection/blob/main/LICENSE.txt"><img alt="GitHub" src="https://img.shields.io/github/license/microsoft/component-detection"></a>
 </p>
@@ -106,4 +107,4 @@ or contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with any addi
 
 # Trademarks
 
-This project may contain trademarks or logos for projects, products, or services. Authorized use of Microsoft trademarks or logos is subject to and must follow Microsoft's Trademark & Brand Guidelines. Use of Microsoft trademarks or logos in modified versions of this project must not cause confusion or imply Microsoft sponsorship. Any use of third-party trademarks or logos are subject to those third-party's policies.
+This project may contain trademarks or logos for projects, products, or services. Authorized use of Microsoft trademarks or logos is subject to and must follow Microsoft's Trademark & Brand Guidelines. Use of Microsoft trademarks or logos in modified versions of this project must not cause confusion or imply Microsoft sponsorship. Any use of third-party trademarks or logos are subject to those third-party's policies.