Minor grammar improvement in types.rst (GH-11308)

defines utility function -> defines utility functions

Reported in https://mail.python.org/pipermail/docs/2018-December/038693.html

diff --git a/Doc/library/types.rst b/Doc/library/types.rst
index e17070022cd2ede364653288c7b9561f4204100d..b19aa0273ef52cd4d06382ca89b7e5547c71973b 100644 (file)
--- a/Doc/library/types.rst
+++ b/Doc/library/types.rst
@@ -8,7 +8,7 @@
 
 --------------
 
-This module defines utility function to assist in dynamic creation of
+This module defines utility functions to assist in dynamic creation of
 new types.
 
 It also defines names for some object types that are used by the standard