Changed \indexsubitem from ({\tt SGMLParser} method) to just

(SGMLParser method).

This makes it more consistent with other modules.  All three *mllib modules
need this change.

Doc/lib/libsgmllib.tex

@@ -36,7 +36,7 @@ spaces, tabs, and newlines are allowed between the trailing
 The \code{SGMLParser} class must be instantiated without arguments.
 It has the following interface methods:
 
-\renewcommand{\indexsubitem}{({\tt SGMLParser} method)}
+\renewcommand{\indexsubitem}{(SGMLParser method)}
 
 \begin{funcdesc}{reset}{}
 Reset the instance.  Loses all unprocessed data.  This is called

Doc/libsgmllib.tex

@@ -36,7 +36,7 @@ spaces, tabs, and newlines are allowed between the trailing
 The \code{SGMLParser} class must be instantiated without arguments.
 It has the following interface methods:
 
-\renewcommand{\indexsubitem}{({\tt SGMLParser} method)}
+\renewcommand{\indexsubitem}{(SGMLParser method)}
 
 \begin{funcdesc}{reset}{}
 Reset the instance.  Loses all unprocessed data.  This is called