update changelog note format

Author: Pouyanpi

CHANGELOG.md

@@ -4,9 +4,11 @@ All notable changes to this project will be documented in this file.
 
 This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-NOTE:
+> [!NOTE]
 
-The changes related to the Colang language and runtime have moved to [CHANGELOG-Colang](./CHANGELOG-Colang.md) file.
+> We have updated our changelog format!
+
+> The changes related to the Colang language and runtime have moved to [CHANGELOG-Colang](./CHANGELOG-Colang.md) file.
 
 ## [0.12.0] - 2025-02-26