New section header style.

Fix up a few synopses.
diff --git a/Doc/lib/librfc822.tex b/Doc/lib/librfc822.tex
index e9317d2..61aadd8 100644
--- a/Doc/lib/librfc822.tex
+++ b/Doc/lib/librfc822.tex
@@ -1,4 +1,5 @@
-\section{Standard Module \module{rfc822}}
+\section{\module{rfc822} ---
+         Parse RFC 822 mail headers.}
 \declaremodule{standard}{rfc822}
 
 \modulesynopsis{Parse \rfc{822} style mail headers.}