docs: Fix typos in manpages

Change-Id: I0231775c7d509c992e782144e7838dce793f7e5f
diff --git a/docs/manpages/ndn-autoconfig-server.rst b/docs/manpages/ndn-autoconfig-server.rst
index c38b6c1..553635e 100644
--- a/docs/manpages/ndn-autoconfig-server.rst
+++ b/docs/manpages/ndn-autoconfig-server.rst
@@ -14,12 +14,12 @@
 Description
 -----------
 
-``ndn-autoconfig-server`` is a daemon that implements server part for the stage 1 of
+``ndn-autoconfig-server`` is a daemon that implements the server part for the stage 1 of
 :ref:`NDN hub discovery procedure`.
 
 This daemon essentially waits for Interests for ``/localhop/ndn-autoconf/hub`` and
-satisfies them with a Data packet that contains TLV-encoded FaceUri block.  The value of
-this block is the ``Uri`` for the HUB, preferrably a UDP tunnel.
+satisfies them with a Data packet that contains a TLV-encoded FaceUri block.  The value of
+this block is the ``Uri`` for the HUB, preferably a UDP tunnel.
 
 ``-h``
   print usage and exit.
@@ -28,7 +28,7 @@
   FaceUri for this NDN hub.
 
 ``-p prefix``
-  A local prefix for which the local hub allow end applications to register prefix
+  A local prefix for which the local hub allows end applications to register prefixes
   (See more details in :ref:`local-prefix-discovery`).  One can supply more than one
   prefixes.  All supplied prefixes will be put into the local prefix discovery data
   as described in :ref:`local-prefix-discovery`.  If no prefix is specified,