Update the type of tp_dealloc.
diff --git a/Doc/ext/newtypes.tex b/Doc/ext/newtypes.tex
index 96cc8def..89f95be 100644
--- a/Doc/ext/newtypes.tex
+++ b/Doc/ext/newtypes.tex
@@ -347,7 +347,7 @@
 \index{finalization, of objects}
 
 \begin{verbatim}
-    destructor tp_dealloc;
+    freefunc tp_dealloc;
 \end{verbatim}
 
 This function is called when the reference count of the instance of