Moved build.html to building.html

Mac/Demo/index.html

@@ -82,7 +82,7 @@ how to create a Python module interfacing to a scriptable application,
 and how to use that module in your python program.
 
 <LI>
-<A HREF="build.html">Building Mac Python from source</A> explains
+<A HREF="building.html">Building Mac Python from source</A> explains
 how to build a PPC or 68K interpreter from a source distribution.
 </UL>