Point to new collections.abc module for collections ABCs
diff --git a/Doc/library/abc.rst b/Doc/library/abc.rst
index 3e38cb4..54f7a5f 100644
--- a/Doc/library/abc.rst
+++ b/Doc/library/abc.rst
@@ -20,7 +20,7 @@
The :mod:`collections` module has some concrete classes that derive from
ABCs; these can, of course, be further derived. In addition the
-:mod:`collections` module has some ABCs that can be used to test whether
+:mod:`collections.abc` submodule has some ABCs that can be used to test whether
a class or instance provides a particular interface, for example, is it
hashable or a mapping.