clean up some link markup

Doc/ext/windows.tex

@@ -29,10 +29,10 @@ Python; typically Microsoft Visual \Cpp.
 
 There are two approaches to building extension modules on Windows,
 just as there are on \UNIX: use the
-\citetitle[../lib/module-distutils.html]{distutils} package to
+\ulink{\module{distutils}}{../lib/module-distutils.html} package to
 control the build process, or do things manually.  The distutils
 approach works well for most extensions; documentation on using
-\citetitle[../lib/module-distutils.html]{distutils} to build and
+\ulink{\module{distutils}}{../lib/module-distutils.html} to build and
 package extension modules is available in
 \citetitle[../dist/dist.html]{Distributing Python Modules}.  This
 section describes the manual approach to building Python extensions