docs: update build badge url

Author: incendial

README.md

@@ -1,4 +1,4 @@
-[![Build Status](https://shields.io/github/workflow/status/dart-code-checker/dart-code-metrics/build?logo=github&logoColor=white)](https://github.com/dart-code-checker/dart-code-metrics/)
+[![Build Status](https://shields.io/github/actions/workflow/status/dart-code-checker/dart-code-metrics/package_analyze.yaml?logo=github&logoColor=white&branch=master)](https://github.com/dart-code-checker/dart-code-metrics/)
 [![Coverage Status](https://img.shields.io/codecov/c/github/dart-code-checker/dart-code-metrics?logo=codecov&logoColor=white)](https://codecov.io/gh/dart-code-checker/dart-code-metrics/)
 [![Pub Version](https://img.shields.io/pub/v/dart_code_metrics?logo=dart&logoColor=white)](https://pub.dev/packages/dart_code_metrics/)
 [![Dart SDK Version](https://badgen.net/pub/sdk-version/dart_code_metrics)](https://pub.dev/packages/dart_code_metrics/)