update changelog

Author: jonhealy1

CHANGELOG.md

@@ -16,8 +16,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Fixed
 
-- Fixed filter parameter handling for GET `/collections-search` endpoint. Filter parameters (`filter` and `filter-lang`) are now properly passed through and processed.
-- Fixed `q` parameter in GET `/collections-search` endpoint to be converted to a list format, matching the behavior of the `/collections` endpoint for consistency.
+- Fixed filter parameter handling for GET `/collections-search` endpoint. Filter parameters (`filter` and `filter-lang`) are now properly passed through and processed. [#511](https://github.com/stac-utils/stac-fastapi-elasticsearch-opensearch/pull/511)
+- Fixed `q` parameter in GET `/collections-search` endpoint to be converted to a list format, matching the behavior of the `/collections` endpoint for consistency. [#511](https://github.com/stac-utils/stac-fastapi-elasticsearch-opensearch/pull/511)
 
 ### Removed