message: CHANGELOG: Remove trailing whitespace & double newline
diff: @@ -18,7 +18,6 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
  - Show message count for unit chat. [#933](https://github.com/geli-lms/geli/issues/993)
  - Styles for free text units. [#867](https://github.com/geli-lms/geli/issues/867)
  -
  ### Changed
  - Update mongoose to 5.2.x. [#1004](https://github.com/geli-lms/geli/pull/1004)
  - Update contributors list. [#1007](https://github.com/geli-lms/geli/issues/1007)
  