drivers/can: fix doxygen documentation + typo

cpu/native/can/candev_linux.c

cpu/native/include/candev_linux.h

cpu/native/include/candev_linux_params.h

drivers/can_trx/can_trx.c

drivers/include/can/can_trx.h

drivers/include/can/candev.h

drivers/include/can/doc.txt

sys/can/conn/isotp.c

sys/can/conn/raw.c

sys/can/device.c

sys/can/dll.c

sys/can/isotp/isotp.c

sys/can/pkt.c

sys/can/router.c

sys/include/can/can.h

sys/include/can/common.h

sys/include/can/conn/isotp.h

sys/include/can/conn/raw.h

sys/include/can/device.h

sys/include/can/dll.h