Removed Unreleased references in CHANGELOG.md

Author: mhoffrog

CHANGELOG.md

@@ -59,22 +59,17 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - TBD
 -->
 
-## [Unreleased]
-
-### Changed
-- TBD
-
-
 ## [2021-03-19]
 
 ### Added
-- Extended to send error messages to a configurable eMail address
+- Extended to send error messages to a configurable eMail address - implements #53
 - Added config `'emailAddressOnError'`
 - Added config `'notifyByMailOnSuccess'`
 - Added localizations for error messages
-- Added eMail templates for mail notifocations
+- Added eMail templates for mail notifications
 - German translations added
 
+
 ## [2016-08-14]
 
 ### Changed
@@ -123,7 +118,6 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 - This is just a dummy placeholder to make the parser of GHCICD/release-notes-from-changelog@v1 happy!
 -->
 
-[Unreleased]: https://github.com/woolfg/dokuwiki-plugin-gitbacked/compare/v2021-03-19..HEAD
 [2021-03-19]: https://github.com/woolfg/dokuwiki-plugin-gitbacked/compare/v2016-08-14..v2021-03-19
 [2016-08-14]: https://github.com/woolfg/dokuwiki-plugin-gitbacked/compare/v2015-10-03..v2016-08-14
 [2015-10-03]: https://github.com/woolfg/dokuwiki-plugin-gitbacked/compare/v2012-10-31..v2015-10-03