Tweak ControlPort description in manpage

changes/doc28805

@@ -0,0 +1,4 @@
+  o Documentation (manpage):
+    - Improve ControlPort description in tor manpage to mention that it
+      accepts address/port pair, and can be used multiple times. Closes ticket
+      28805.

doc/tor.1.txt

@@ -350,7 +350,7 @@ GENERAL OPTIONS
     all sockets will be set to this limit. Must be a value between 2048 and
     262144, in 1024 byte increments. Default of 8192 is recommended.
 
-[[ControlPort]] **ControlPort** __PORT__|**unix:**__path__|**auto** [__flags__]::
+[[ControlPort]] **ControlPort** \['address':]__port__|**unix:**__path__|**auto** [__flags__]::
     If set, Tor will accept connections on this port and allow those
     connections to control the Tor process using the Tor Control Protocol
     (described in control-spec.txt in
@@ -361,7 +361,8 @@ GENERAL OPTIONS
     methods means either method is sufficient to authenticate to Tor.) This
     option is required for many Tor controllers; most use the value of 9051.
     If a unix domain socket is used, you may quote the path using standard
-    C escape sequences.
+    C escape sequences. You can specify this directive multiple times, to
+    bind to multiple address/port pairs.
     Set it to "auto" to have Tor pick a port for you. (Default: 0) +
  +
     Recognized flags are...