Fix changelog item

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

CHANGELOG

@@ -36,6 +36,7 @@ v 8.2.0 (unreleased)
   - MR target branch is now visible on a list view when it is different from project's default one
   - Improve Continuous Integration graphs page
   - Make color of "Accept Merge Request" button consistent with current build status
+  - Ability to add release notes (markdown text and attachments) to git tags (aka Releases)
 
 v 8.1.4
   - Fix bug where manually merged branches in a MR would end up with an empty diff (Stan Hu)