chore(changelog): fix up inconsistencies

Author: kaizencc

CHANGELOG.v2.alpha.md

@@ -2,7 +2,7 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
-### [2.173.3-alpha.0](https://github.com/aws/aws-cdk/compare/v2.173.2-alpha.0...v2.173.3-alpha.0) (2024-12-26)
+## [2.173.3-alpha.0](https://github.com/aws/aws-cdk/compare/v2.173.2-alpha.0...v2.173.3-alpha.0) (2024-12-26)
 
 ## [2.173.2-alpha.0](https://github.com/aws/aws-cdk/compare/v2.173.1-alpha.0...v2.173.2-alpha.0) (2024-12-17)
 

CHANGELOG.v2.md

@@ -2,7 +2,7 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
-### [2.173.3](https://github.com/aws/aws-cdk/compare/v2.173.2...v2.173.3) (2024-12-26)
+## [2.173.3](https://github.com/aws/aws-cdk/compare/v2.173.2...v2.173.3) (2024-12-26)
 
 
 ### Bug Fixes