Update changelog

Author: ghbm-itk

changelog.md

@@ -187,7 +187,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial release
 
-[Unreleased]: https://github.com/itk-dev-rpa/ITK-dev-shared-components/compare/2.8.0...HEAD
+[Unreleased]: https://github.com/itk-dev-rpa/ITK-dev-shared-components/compare/2.8.1...HEAD
+[2.8.1]: https://github.com/itk-dev-rpa/ITK-dev-shared-components/releases/tag/2.8.1
 [2.8.0]: https://github.com/itk-dev-rpa/ITK-dev-shared-components/releases/tag/2.8.0
 [2.7.1]: https://github.com/itk-dev-rpa/ITK-dev-shared-components/releases/tag/2.7.1
 [2.7.0]: https://github.com/itk-dev-rpa/ITK-dev-shared-components/releases/tag/2.7.0