fix "Title underline too short" sphinx warning

diff --git a/Doc/library/subprocess.rst b/Doc/library/subprocess.rst
index 78fa86cda4d2e43dfc9cfb674cfb8f64354bffce..274a6d9e51fc19569c83fb15942ca11c4623da5c 100644 (file)
--- a/Doc/library/subprocess.rst
+++ b/Doc/library/subprocess.rst
@@ -234,7 +234,7 @@ detail in the :class:`Popen` constructor documentation.
 
 
 Popen Constructor
-^^^^^^^^^^^^^^^^
+^^^^^^^^^^^^^^^^^
 
 The underlying process creation and management in this module is handled by
 the :class:`Popen` class. It offers a lot of flexibility so that developers