Adjusted to use the new module synopsis support macros.
diff --git a/Doc/lib/libthreading.tex b/Doc/lib/libthreading.tex
index f8da0ed..6808ea9 100644
--- a/Doc/lib/libthreading.tex
+++ b/Doc/lib/libthreading.tex
@@ -1,6 +1,8 @@
 \section{Standard Module \module{threading}}
-\label{module-threading}
-\stmodindex{threading}
+\declaremodule{standard}{threading}
+
+\modulesynopsis{None}
+
 
 This module constructs higher-level threading interfaces on top of the
 lower level