Update CHANGELOG.md

Author: dkrutskikh

CHANGELOG.md

@@ -3,11 +3,11 @@
 ## Unreleased
 
 * docs: remove old website
+* feat: add static code diagnostic [`correct-game-instantiating`](https://dcm.dev/docs/individuals/rules/flame/correct-game-instantiating).
 
 ## 5.5.1
 
 * fix: export missing parts of public API.
-* feat: add static code diagnostic [`correct-game-instantiating`](https://dcm.dev/docs/individuals/rules/flame/correct-game-instantiating).
 * feat: support `context.mounted` for [`use-setstate-synchronously`](https://dcm.dev/docs/individuals/rules/flutter/use-setstate-synchronously).
 * feat: add `allow-only-once` option to [`no-magic-number`](https://dcm.dev/docs/individuals/rules/common/no-magic-number).