Fixed CHANGELOG link

Author: chris-allen

CHANGELOG.md

@@ -103,7 +103,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Usage documentation
 
 [Unreleased]: https://github.com/chris-allen/dream-ops/compare/v0.9.0...HEAD
-[0.8.1]: https://github.com/chris-allen/dream-ops/compare/v0.8.1...v0.9.0
+[0.9.0]: https://github.com/chris-allen/dream-ops/compare/v0.8.1...v0.9.0
 [0.8.1]: https://github.com/chris-allen/dream-ops/compare/v0.8.0...v0.8.1
 [0.8.0]: https://github.com/chris-allen/dream-ops/compare/v0.7.0...v0.8.0
 [0.7.0]: https://github.com/chris-allen/dream-ops/compare/v0.6.1...v0.7.0