couple of typos in the documentation fixed

examples/chat/README

 
 This example is a simple instant messaging implementation. There are multiple
-partipants in the chat, both sending and reading messages. The sending
+participants in the chat, both sending and reading messages. The sending
 application 'prompt' is separated from the application displaying the chat
 'display' so that there's no need for sophisticated GUI.
 

man/man3/zmq_term.3

 .TH zmq_term 3 "" "(c)2007-2010 iMatix Corporation" "0MQ User Manuals"
 .SH NAME
-zmq_init \- terminates 0MQ context
+zmq_term \- terminates 0MQ context
 .SH SYNOPSIS
 .B int zmq_term (void *context);
 .SH DESCRIPTION