ipw2200: fix spelling mistake: "functionalitis" -> "functionalities"

Trivial fix to spelling mistake in module parameter description text
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/intel/ipw2x00/ipw2200.c

@@ -12012,7 +12012,7 @@ MODULE_PARM_DESC(rtap_iface, "create the rtap interface (1 - create, default 0)"
 
 #ifdef CONFIG_IPW2200_QOS
 module_param(qos_enable, int, 0444);
-MODULE_PARM_DESC(qos_enable, "enable all QoS functionalitis");
+MODULE_PARM_DESC(qos_enable, "enable all QoS functionalities");
 
 module_param(qos_burst_enable, int, 0444);
 MODULE_PARM_DESC(qos_burst_enable, "enable QoS burst mode");