Remove all uses of \sectcode; we can now use logical markup everywhere.
diff --git a/Doc/libpickle.tex b/Doc/libpickle.tex
index 3c1eaa6..038b763 100644
--- a/Doc/libpickle.tex
+++ b/Doc/libpickle.tex
@@ -1,4 +1,4 @@
-\section{Standard Module \sectcode{pickle}}
+\section{Standard Module \module{pickle}}
 \label{module-pickle}
 \stmodindex{pickle}
 \index{persistency}