docs: fix syntax highlighting of code blocks

And various other cleanups

Change-Id: I240badc5358c09f006c2a22d4706ce373f2dd188
diff --git a/docs/manpages/ndn-autoconfig.rst b/docs/manpages/ndn-autoconfig.rst
index 9767c86..c455bb9 100644
--- a/docs/manpages/ndn-autoconfig.rst
+++ b/docs/manpages/ndn-autoconfig.rst
@@ -3,12 +3,10 @@
 ndn-autoconfig
 ==============
 
-Usage
------
+Synopsis
+--------
 
-::
-
-    ndn-autoconfig [options]
+**ndn-autoconfig** [**-h**] [**-V**] [**-c** *file*] [**-d**]
 
 Description
 -----------
@@ -24,11 +22,11 @@
 
   NOTE: if connection to NFD fails, the daemon will be terminated.
 
-``-c [FILE]`` or ``--config=[FILE]``
+``-c FILE`` or ``--config=FILE``
   Use the specified configuration file. If `enabled = true` is not specified in the
   configuration file, no actions will be performed.
 
-``--ndn-fch-url=[URL]``
+``--ndn-fch-url=URL``
   Use the specified URL to find the closest hub (NDN-FCH protocol).  If not specified,
   ``http://ndn-fch.named-data.net/`` will be used.  Only ``http://`` URLs are supported.