face: enable congestion marking by default on supported faces

refs #4465

Change-Id: Id545f83763f1ba27ba0d770fd4398948d6f20acf
diff --git a/docs/manpages.rst b/docs/manpages.rst
index e2e0582..1e14cbf 100644
--- a/docs/manpages.rst
+++ b/docs/manpages.rst
@@ -9,6 +9,7 @@
    manpages/nfdc-status
    manpages/nfdc-face
    manpages/nfdc-route
+   manpages/nfdc-cs
    manpages/nfdc-strategy
    manpages/nfd-status
    schema