New section header style.

Fix up a few synopses.
diff --git a/Doc/lib/libsgmllib.tex b/Doc/lib/libsgmllib.tex
index 642dacd..a8dfa0b 100644
--- a/Doc/lib/libsgmllib.tex
+++ b/Doc/lib/libsgmllib.tex
@@ -1,4 +1,5 @@
-\section{Standard Module \module{sgmllib}}
+\section{\module{sgmllib} ---
+         Simple SGML parser.}
 \declaremodule{standard}{sgmllib}
 
 \modulesynopsis{Only as much of an SGML parser as needed to parse HTML.}