Issue #22558: Add remaining doc links to source code for Python-coded modules.
Reformat header above separator line (added if missing) to a common format.
Patch by Yoni Lavi.
diff --git a/Lib/idlelib/help.html b/Lib/idlelib/help.html
index ec0b218..6f739c4 100644
--- a/Lib/idlelib/help.html
+++ b/Lib/idlelib/help.html
@@ -75,7 +75,9 @@
 
   <div class="section" id="idle">
 <span id="id1"></span><h1>25.5. IDLE<a class="headerlink" href="#idle" title="Permalink to this headline">¶</a></h1>
-<p id="index-0">IDLE is Python&#8217;s Integrated Development and Learning Environment.</p>
+<p><strong>Source code:</strong> <a class="reference external" href="https://hg.python.org/cpython/file/3.5/Lib/idlelib/">Lib/idlelib/</a></p>
+<hr class="docutils" id="index-0" />
+<p>IDLE is Python&#8217;s Integrated Development and Learning Environment.</p>
 <p>IDLE has the following features:</p>
 <ul class="simple">
 <li>coded in 100% pure Python, using the <a class="reference internal" href="tkinter.html#module-tkinter" title="tkinter: Interface to Tcl/Tk for graphical user interfaces"><code class="xref py py-mod docutils literal"><span class="pre">tkinter</span></code></a> GUI toolkit</li>
@@ -701,7 +703,7 @@
     The Python Software Foundation is a non-profit corporation.
     <a href="https://www.python.org/psf/donations/">Please donate.</a>
     <br />
-    Last updated on May 02, 2016.
+    Last updated on Jun 11, 2016.
     <a href="../bugs.html">Found a bug</a>?
     <br />
     Created using <a href="http://sphinx.pocoo.org/">Sphinx</a> 1.3.3.