Move source links to consistent location and remove wordy, big yellow boxes.
diff --git a/Doc/library/threading.rst b/Doc/library/threading.rst
index 3b1b1bf..03ff44c 100644
--- a/Doc/library/threading.rst
+++ b/Doc/library/threading.rst
@@ -4,6 +4,7 @@
 .. module:: threading
    :synopsis: Thread-based parallelism.
 
+**Source code:** :source:`Lib/threading.py`
 
 This module constructs higher-level threading interfaces on top of the lower
 level :mod:`_thread` module.  See also the :mod:`queue` module.
@@ -28,11 +29,6 @@
    However, threading is still an appropriate model if you want to run
    multiple I/O-bound tasks simultaneously.
 
-.. seealso::
-
-   Latest version of the :source:`threading module Python source code
-   <Lib/threading.py>`
-
 
 This module defines the following functions and objects: