python/doc/source/whatsnew/index.rst: Fix title underline too short.

MLopez-Ibanez · MLopez-Ibanez · commit 9dbbbd557e43 · 2025-07-15T14:00:49.000+01:00
diff --git a/python/doc/source/whatsnew/index.rst b/python/doc/source/whatsnew/index.rst
@@ -5,7 +5,7 @@ What's new
 **********
 
 Version 0.1.8 (15/07/2025)
--------------------
+--------------------------
 
 - Correct license to LGPL v2.1 or later.
 - Bump dependencies to ``cffi>=1.17.1`` and ``setuptools>=77.0.3``.
