Fix changelog

CHANGELOG

@@ -19,11 +19,7 @@ v 8.12.0 (unreleased)
 v 8.11.3 (unreleased)
   - Allow system info page to handle case where info is unavailable
-
-v 8.11.3 (unreleased)
   - Label list shows all issues (opened or closed) with that label
-
-v 8.11.2
   - Don't show resolve conflicts link before MR status is updated
   - Don't prevent viewing the MR when git refs for conflicts can't be found on disk
@@ -31,6 +27,7 @@ v 8.11.3 (unreleased)
   - Don't try to show merge conflict resolution info if a merge conflict contains non-UTF-8 characters
 v 8.11.2 (unreleased)
+v 8.11.2
   - Show "Create Merge Request" widget for push events to fork projects on the source project
 v 8.11.1