docs: change prefix of routable-prefixes packet to under /localhop/nfd

refs #2479

Change-Id: I49c02bbfe5eed282c33ecfe99ce8b1894a1b7d23
diff --git a/docs/misc/local-prefix-discovery.rst b/docs/misc/local-prefix-discovery.rst
index 1916376..db4e655 100644
--- a/docs/misc/local-prefix-discovery.rst
+++ b/docs/misc/local-prefix-discovery.rst
@@ -6,13 +6,13 @@
 Some applications need to discover prefix(es) under which they can publish data
 / which Interests local hub will be able to forward down to the application.
 In order to discover that, applications need to send an interest for
-``/localhop/ndn-autoconf/routable-prefixes`` prefix. Response data to the
+``/localhop/nfd/rib/routable-prefixes`` prefix. Response data to the
 interest contains a list of prefixes and should be encoded as:
 
 ::
 
     Response ::= DATA-TYPE TLV-LENGTH
-                 Name (= /localhop/ndn-autoconf/routable-prefixes/[version])
+                 Name (= /localhop/nfd/rib/routable-prefixes/[version]/[segment])
                  MetaInfo (= ResponseMetaInfo)
                  Content (= ResponseContent)
                  Signature
@@ -28,5 +28,5 @@
     towards the face from which the request has been received.  The requester may
     process list of the returned names and pick whichever it wants to use.
 
-For now, the ``/localhop/ndn-autoconf/routable-prefixes`` data is served by
+For now, the ``/localhop/nfd/rib/routable-prefixes`` data is served by
 :ref:`ndn-autoconfig-server`.