Add entry for the new distutils section.
diff --git a/Doc/lib/lib.tex b/Doc/lib/lib.tex
index 986c355..2ec998a 100644
--- a/Doc/lib/lib.tex
+++ b/Doc/lib/lib.tex
@@ -281,6 +281,7 @@
 \input{libpycompile}            % really py_compile
 \input{libcompileall}
 \input{libdis}
+\input{distutils}
 
 %\input{libamoeba}              % AMOEBA ONLY