rt2x00:Fix typo

Signed-off-by: John Li <chen-yang.li@mediatek.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rt2x00/Kconfig

@@ -163,7 +163,7 @@ config RT2800USB_RT53XX
        depends on EXPERIMENTAL
        ---help---
          This adds support for rt53xx wireless chipset family to the
-         rt2800pci driver.
+         rt2800usb driver.
          Supported chips: RT5370
 
 config RT2800USB_UNKNOWN