update the CHANGELOG

Author: Jorge Aparicio

CHANGELOG.md

@@ -23,4 +23,5 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - Initial version of the `svd2rust` tool
 
-[Unreleased]: https://github.com/japaric/svd2rust/compare/v0.1.0...HEAD
+[Unreleased]: https://github.com/japaric/svd2rust/compare/v0.1.1...HEAD
+[v0.1.1]: https://github.com/japaric/svd2rust/compare/v0.1.0...v0.1.1