[WC-1294]: Add breaking change record (#37)

Author: Illia Obukhau

packages/pluggableWidgets/charts-web/CHANGELOG.md

@@ -6,9 +6,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
-### Added
+### Breaking changes
 
--   We converted all charts to Pluggable. Now you can combine them with Data grid 2, Gallery, Tree node and much more.
+-   We removed all deprecated chart widgets. If your app uses deprecated chart widgets, you must manually replace them with new ones.
 
 ## [2.0.0] Charts - 2021-09-28