Closes #14289: put a link to the CHM download page on the docs download page.

Doc/tools/sphinxext/download.html

@@ -39,9 +39,13 @@ in the table are the size of the download files in megabytes.</p>
   </tr>
 </table>
 
-
 <p>These archives contain all the content in the documentation.</p>
 
+<p>HTML Help (<tt>.chm</tt>) files are made available in the "Windows" section
+on the <a href="http://python.org/download/releases/{{ release[:5] }}/">Python
+download page</a>.</p>
+
+
 <h2>Unpacking</h2>
 
 <p>Unix users should download the .tar.bz2 archives; these are bzipped tar