Add to release notes

marcphilipp · marcphilipp · commit 02a7209007b2 · 2022-07-10T15:20:00.000+02:00
diff --git a/documentation/src/docs/asciidoc/release-notes/release-notes-5.9.0.adoc b/documentation/src/docs/asciidoc/release-notes/release-notes-5.9.0.adoc
@@ -39,7 +39,8 @@ GitHub.
 
 ==== New Features and Improvements
 
-* ❓
+* `AssertionFailureBuilder` allows reusing Jupiter's logic for creating failure messages
+  to assist in writing custom assertion methods.
 
 
 [[release-notes-5.9.0-junit-vintage]]
