fix(docs): update CHANGELOG.md formatting for v0.16.0 release

Signed-off-by: Kate Goldenring <[email protected]>

Author: kate-goldenring

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## v0.16.0 - 2024-10-04
+## [v0.16.0](https://github.com/spinkube/containerd-shim-spin/releases/tag/v0.16.0) - 2024-10-04
 
 ### Added