README.md: update badge to github action workflows [ci skip]

README.md

@@ -74,8 +74,8 @@ API available is the one supported by OpenJPEG.
 [comment-license]: https://img.shields.io/github/license/uclouvain/openjpeg.svg "https://img.shields.io/badge/license-BSD--2--Clause-blue.svg"
 [badge-license]: https://img.shields.io/badge/license-BSD--2--Clause-blue.svg "BSD 2-clause \"Simplified\" License"
 [link-license]: https://github.com/uclouvain/openjpeg/blob/master/LICENSE "BSD 2-clause \"Simplified\" License"
-[badge-build]: https://travis-ci.org/uclouvain/openjpeg.svg?branch=master "Build Status"
-[link-build]: https://travis-ci.org/uclouvain/openjpeg "Build Status"
+[badge-build]: https://github.com/uclouvain/openjpeg/actions/workflows/build.yml/badge.svg "Build Status"
+[link-build]: https://github.com/uclouvain/openjpeg/actions/workflows/build.yml "Build Status"
 [badge-msvc-build]: https://ci.appveyor.com/api/projects/status/github/uclouvain/openjpeg?branch=master&svg=true "Windows Build Status"
 [link-msvc-build]: https://ci.appveyor.com/project/detonin/openjpeg/branch/master "Windows Build Status"
 [badge-coverity]: https://scan.coverity.com/projects/6383/badge.svg "Coverity Scan Build Status"