chore: update changelog

frontend/app_flowy/packages/appflowy_editor/CHANGELOG.md

@@ -1,6 +1,7 @@
 ## 0.0.7
 * Refactor theme customizer, and support dark mode.
 * Support export and import markdown.
+* Refactor example project.
 * Fix some bugs.
 
 ## 0.0.6