Fix spacing in Changelog (#5510)

Author: davidh44

CHANGELOG.md

@@ -1,11 +1,11 @@
  #### 👋 _Looking for changelogs for older versions? You can find them in the [changelogs](./changelogs) directory._
 # __2.27.5__ __2024-08-14__
 ## __AWS CodeBuild__
-- ### Features
+  - ### Features
     - AWS CodeBuild now supports using Secrets Manager to store git credentials and using multiple source credentials in a single project.
 
 ## __S3 Transfer Manager__
-- ### Features
+  - ### Features
     - This change enables multipart download for S3 Transfer Manager with the java-based Multipart S3 Async Client.
 
 # __2.27.4__ __2024-08-13__