USB: serial: ftdi_sio: Fix broken URL in comment

This fixes a typo in the URL: http://zeitcontrol.de/Signed-off-by: NNik Nyby <nikolas@gnu.org>
Signed-off-by: NJohan Hovold <johan@kernel.org>

drivers/usb/serial/ftdi_sio_ids.h

@@ -1365,7 +1365,7 @@
 #define FTDI_CTI_NANO_PID	0xF60B
 
 /*
- * ZeitControl cardsystems GmbH rfid-readers http://zeitconrol.de
+ * ZeitControl cardsystems GmbH rfid-readers http://zeitcontrol.de
  */
 /* TagTracer MIFARE*/
 #define FTDI_ZEITCONTROL_TAGTRACE_MIFARE_PID	0xF7C0