move changelog entries under unreleased

Author: NicholasEllul

CHANGELOG.md

@@ -7,9 +7,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-## [2.0.0]
-
-### Changed
+### Added
 
 - Added multi language support
 - Consolidated all action under one repository
@@ -26,7 +24,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial release of this action ([#29](https://github.com/MetaMask/action-security-code-scanner/pull/29))
 
-[Unreleased]: https://github.com/metamask/security-codescanner-monorepo/compare/v2.0.0...HEAD
-[2.0.0]: https://github.com/metamask/security-codescanner-monorepo/compare/v1.1.0...v2.0.0
+[Unreleased]: https://github.com/metamask/security-codescanner-monorepo/compare/v1.1.0...HEAD
 [1.1.0]: https://github.com/metamask/security-codescanner-monorepo/compare/v1.0.0...v1.1.0
 [1.0.0]: https://github.com/metamask/security-codescanner-monorepo/releases/tag/v1.0.0