chore: fix version typo

Author: Nacho Anaya

CHANGELOG.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [v1.5.0](https://github.com/checkly/terraform-provider-checkly/releases/tag/v1.6.0) - 2022-06-21
+## [v1.6.0](https://github.com/checkly/terraform-provider-checkly/releases/tag/v1.6.0) - 2022-06-21
 ### Added
 - Support Private Locations resources [#164](https://github.com/checkly/terraform-provider-checkly/issues/164)
 - Allow Checks/Groups use private locations [#159](https://github.com/checkly/terraform-provider-checkly/issues/159)