docs: update github build badge

Author: mdeandrea-mrmilu

README.md

@@ -5,7 +5,7 @@ This package helps in creation of data collection forms in Flutter by removing t
 Also included are common ready-made form input fields for FormBuilder. This gives you a convenient way of adding common ready-made input fields instead of creating your own FormBuilderField from scratch.
 
 [![Pub Version](https://img.shields.io/pub/v/flutter_form_builder?logo=flutter&style=for-the-badge)](https://pub.dev/packages/flutter_form_builder)
-[![GitHub Workflow Status](https://img.shields.io/github/workflow/status/flutter-form-builder-ecosystem/flutter_form_builder/Base?logo=github&style=for-the-badge)](https://github.com/flutter-form-builder-ecosystem/flutter_form_builder/actions/workflows/base.yaml)
+[![GitHub Workflow Status](https://img.shields.io/github/actions/workflow/status/flutter-form-builder-ecosystem/flutter_form_builder/base.yaml?branch=main&logo=github&style=for-the-badge)](https://github.com/flutter-form-builder-ecosystem/flutter_form_builder/actions/workflows/base.yaml)
 [![Codecov](https://img.shields.io/codecov/c/github/flutter-form-builder-ecosystem/flutter_form_builder?logo=codecov&style=for-the-badge)](https://codecov.io/gh/flutter-form-builder-ecosystem/flutter_form_builder/)
 [![CodeFactor Grade](https://img.shields.io/codefactor/grade/github/flutter-form-builder-ecosystem/flutter_form_builder?logo=codefactor&style=for-the-badge)](https://www.codefactor.io/repository/github/flutter-form-builder-ecosystem/flutter_form_builder)
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