Fix cuda_pathfinder/docs/source/release/1.2.3-notes.rst (#1002)

Author: rwgk

cuda_pathfinder/docs/source/release/1.2.3-notes.rst

@@ -12,6 +12,7 @@ Released on Sep 17, 2025
 Highlights
 ----------
 
-* Extend experimental ``cuda.pathfinder._find_nvidia_headers`` API
-  to support CTK library headers
+* Make the ``cuda.pathfinder._find_nvidia_header_directory`` API public
+  (by removing the leading underscore) and extend the function
+  to also support CTK library headers
   (`PR #956 <https://github.com/NVIDIA/cuda-python/pull/956>`_)