Add reST target for Doc/packaging/setupcfg
diff --git a/Doc/packaging/commandhooks.rst b/Doc/packaging/commandhooks.rst
index 8dc233b..fd33357 100644
--- a/Doc/packaging/commandhooks.rst
+++ b/Doc/packaging/commandhooks.rst
@@ -1,3 +1,5 @@
+.. TODO integrate this in commandref and configfile
+
 =============
 Command hooks
 =============
@@ -9,6 +11,9 @@
 processed), but before it is run. The post-hooks are run after the command
 itself. Both types of hooks receive an instance of the command object.
 
+See also global setup hooks in :ref:`packaging-setupcfg`.
+
+
 Sample usage of hooks
 =====================