Add source link for asyncio.

diff --git a/Doc/library/asyncio.rst b/Doc/library/asyncio.rst
index 21b72bfa71eea5bffa1cb43611a9f64982d041f9..bf33f4e0cba6d7080479fda9abe74f6b7fc53a4d 100644 (file)
--- a/Doc/library/asyncio.rst
+++ b/Doc/library/asyncio.rst
@@ -6,6 +6,9 @@
 
 .. versionadded:: 3.4
 
+**Source code:** :source:`Lib/asyncio/`
+
+--------------
 
 This module provides infrastructure for writing single-threaded concurrent
 code using coroutines, multiplexing I/O access over sockets and other