Fix wrong number of functions noticed by Sandro Tosi.
diff --git a/Doc/library/subprocess.rst b/Doc/library/subprocess.rst
index 7188b95..f146683 100644
--- a/Doc/library/subprocess.rst
+++ b/Doc/library/subprocess.rst
@@ -193,7 +193,7 @@
 Convenience Functions
 ^^^^^^^^^^^^^^^^^^^^^
 
-This module also defines four shortcut functions:
+This module also defines the following shortcut functions:
 
 
 .. function:: call(*popenargs, **kwargs)