Fix typo

Makefile.pre.in was added in 1.4

Doc/inst/inst.tex

@@ -145,7 +145,7 @@ module author fails to provide a setup script.
 
 Additionally, while there has not previously been a standard
 installation mechanism, Python has had some standard machinery for
-building extensions on \UNIX{} since Python \XXX{version?}.  This
+building extensions on \UNIX{} since Python 1.4.  This
 machinery (the \file{Makefile.pre.in} file) is superseded by the
 Distutils, but it will no doubt live on in older module distributions
 for a while.  This \file{Makefile.pre.in} mechanism is documented in
@@ -435,7 +435,7 @@ basic idea is that you supply a base directory for the installation, and
 the \command{install} command picks a set of directories (called an
 \emph{installation scheme}) under this base directory in which to
 install files.  The details differ across platforms, so read whichever
-of the following section applies to you.
+of the following sections applies to you.
 
 
 \subsection{Alternate installation: \UNIX{} (the home scheme)}