help text: remove trailing space

Some help text end with a useless space character.
Remove it.

Change-Id: I397e1194fac8042f0fab694222f925f906716de3
Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com>
Reviewed-on: http://openocd.zylin.com/6222
Tested-by: jenkins

src/jtag/hla/hla_interface.c

@@ -359,7 +359,7 @@ static const struct command_registration hl_interface_command_handlers[] = {
 	 .handler = &hl_interface_handle_vid_pid_command,
 	 .mode = COMMAND_CONFIG,
 	 .help = "the vendor and product ID of the adapter",
-	 .usage = "(vid pid)* ",
+	 .usage = "(vid pid)*",
 	 },
 	{
 	 .name = "hla_stlink_backend",

src/jtag/hla/hla_transport.c

@@ -76,7 +76,7 @@ hl_transport_jtag_subcommand_handlers[] = {
 	 .help = "Create a new TAP instance named basename.tap_type, "
 	 "and appends it to the scan chain.",
 	 .usage = "basename tap_type '-irlen' count "
-	 "['-expected_id' number] ",
+	 "['-expected_id' number]",
 	 },
 	{
 	 .name = "init",