add pr number

Author: jonhealy1

CHANGELOG.md

@@ -12,7 +12,7 @@ The format is (loosely) based on [Keep a Changelog](http://keepachangelog.com/)
 
 ### Removed
 
-- Removed pdoc-generated documentation files and references as the project now uses Sphinx exclusively for documentation.
+- Removed pdoc-generated documentation files and references as the project now uses Sphinx exclusively for documentation. ([#141](https://github.com/stac-utils/stac-check/pull/141))
 
 ## [v1.11.0] - 2025-06-22