small fix

Author: rustagir

source/whats-new.txt

@@ -49,7 +49,8 @@ improvements, and fixes:
   replaced by these new methods in a future driver release, so consider
   changing the usages in your application.
 
-- Adds named arguments for the ``SearchStage`` builder. This change
+- Adds named arguments for the ``SearchStage``, ``VectorSearchStage``,
+  and ``SearchMetaStage`` builder classes. This change
   allows you to write Atlas Search and Atlas Vector Search queries in a
   more type-safe and organized way. To learn more, see the
   :ref:`php-atlas-search` and :ref:`php-vector-search` guides.