Remove more markup from headers

Doc/whatsnew/whatsnew21.tex

@@ -139,7 +139,7 @@ Jeremy Hylton.}
 
 
 %======================================================================
-\section{PEP 236: \module{__future__} Directives}
+\section{PEP 236: __future__ Directives}
 
 The reaction to nested scopes was widespread concern about the dangers
 of breaking code with the 2.1 release, and it was strong enough to
@@ -492,7 +492,7 @@ Warsaw.}
 
 %======================================================================
 
-\section{PEP 235: Case-Insensitive Platforms and \keyword{import}}
+\section{PEP 235: Importing Modules on Case-Insensitive Platforms}
 
 Some operating systems have filesystems that are case-insensitive,
 MacOS and Windows being the primary examples; on these systems, it's

Doc/whatsnew/whatsnew23.tex

@@ -1916,7 +1916,7 @@ documentation}{../lib/module-datetime.html}.
 
 
 %======================================================================
-\subsection{The \module{optparse} Module}
+\subsection{The optparse Module}
 
 The \module{getopt} module provides simple parsing of command-line
 arguments.  The new \module{optparse} module (originally named Optik)
@@ -1992,7 +1992,7 @@ the Getopt SIG.
 
 
 %======================================================================
-\section{Specialized Object Allocator (pymalloc)\label{section-pymalloc}}
+\section{Pymalloc: A Specialized Object Allocator\label{section-pymalloc}}
 
 Pymalloc, a specialized object allocator written by Vladimir
 Marangozov, was a feature added to Python 2.1.  Pymalloc is intended