DOC: update CHANGELOG

CHANGELOG.md

@@ -11,7 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `ext_applicable` module for building fancy features which append
   functionality to entities (EXPERIMENTAL).
 - `ext_cosmetics` module which converts http(s) uris in property values into
-  clickable links.
+  clickable links (with tests)
 - Added a menu/toc for the tour
 - Added a previous and next buttons for pages in the tour
 - Added warnings to inform about minimum width when accessing tour and