Make the word "Module" in the section header start with an upper-case "M".

Remove the leading comment declaring this to be a template for module
documentation.

Doc/lib/libcode.tex

-% Template for a library manual section.
-
-\section{Standard module \sectcode{code}}
+\section{Standard Module \sectcode{code}}
 \label{module-code}
 \stmodindex{code}
 

Doc/libcode.tex

-% Template for a library manual section.
-
-\section{Standard module \sectcode{code}}
+\section{Standard Module \sectcode{code}}
 \label{module-code}
 \stmodindex{code}