Update CHANGELOG.md

Author: morgante

CHANGELOG.md

@@ -43,7 +43,8 @@ project adheres to [Semantic Versioning](http://semver.org/).
 - `instance_template`, `mig`, and `umig` modules
 - examples, basic tests and fixtures for all modules
 
-[Unreleased]: https://github.com/terraform-google-modules/terraform-google-vm/compare/v1.1.0...HEAD
+[Unreleased]: https://github.com/terraform-google-modules/terraform-google-vm/compare/v1.1.1...HEAD
+[1.1.1]: https://github.com/terraform-google-modules/terraform-google-vm/compare/v1.1.0...v1.1.1
 [1.1.0]: https://github.com/terraform-google-modules/terraform-google-vm/compare/v1.0.0...v1.1.0
 [1.0.0]: https://github.com/terraform-google-modules/terraform-google-vm/compare/v0.2.0...v1.0.0
 [0.2.0]: https://github.com/terraform-google-modules/terraform-google-vm/compare/v0.1.0...v0.2.0