docs: Update FIB documentation

Type: docs

Signed-off-by: Neale Ranns <nranns@cisco.com>
Change-Id: I3dfde4520a48c945ca9707accabbe1735c1a8799
diff --git a/docs/gettingstarted/developers/fib20/controlplane.rst b/docs/gettingstarted/developers/fib20/controlplane.rst
index 172e36c..8b58d42 100644
--- a/docs/gettingstarted/developers/fib20/controlplane.rst
+++ b/docs/gettingstarted/developers/fib20/controlplane.rst
@@ -12,10 +12,11 @@
 
 .. toctree::
 
-   arpentries
+   neighbors
    routes
    attachedexport
    graphwalks
+   marknsweep
 
 .. rubric:: Footnotes: