Fix CHANGELOG

CHANGELOG

@@ -13,6 +13,7 @@ v 8.7.0 (unreleased)
   - Implement 'Groups View' as an option for dashboard preferences !3379 (Elias W.)
   - Implement 'TODOs View' as an option for dashboard preferences !3379 (Elias W.)
   - Gracefully handle notes on deleted commits in merge requests (Stan Hu)
+  - Fall back to `In-Reply-To` and `References` headers when sub-addressing is not available (David Padilla)
 
 v 8.6.2
   - Fix dropdown alignment. !3298
@@ -74,7 +75,6 @@ v 8.6.0
   - Fix wiki search results point to raw source (Hiroyuki Sato)
   - Don't load all of GitLab in mail_room
   - Add information about `image` and `services` field at `job` level in the `.gitlab-ci.yml` documentation (Pat Turner)
-  - Fall back to `In-Reply-To` and `References` headers when sub-addressing is not available (David Padilla)
   - HTTP error pages work independently from location and config (Artem Sidorenko)
   - Update `omniauth-saml` to 1.5.0 to allow for custom response attributes to be set
   - Memoize @group in Admin::GroupsController (Yatish Mehta)