Minor doc fix: add some missing (?) characters in manpage.

src/libiperf.3

@@ -25,7 +25,7 @@ Setting test parameters:
 .nf
     void iperf_set_test_role( struct iperf_test *pt, char role );
     void iperf_set_test_bind_address( struct iperf_test *t, char *bind_address );
-    void iperf_set_test_server_hostname( struct iperf_test *t, char *server_hos
+    void iperf_set_test_server_hostname( struct iperf_test *t, char *server_host );
     void iperf_set_test_server_port( struct iperf_test *t, int server_port );
     void iperf_set_test_duration( struct iperf_test *t, int duration );
     void iperf_set_test_blksize( struct iperf_test *t, int blksize );