Documentation: usb: fix typo in UVC gadgetfs config command

This seems to be a copy&paste error. With the fix the uvc gadget now can
be created by following the instrucitons.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

authored by Bin Liu and committed by Greg Kroah-Hartman 1a2e91e7 b8626f1d

+1 -1
+1 -1
Documentation/usb/gadget-testing.txt
··· 693 693 in each line. The rules stated above are best illustrated with an example: 694 694 695 695 # mkdir functions/uvc.usb0/control/header/h 696 - # cd functions/uvc.usb0/control/header/h 696 + # cd functions/uvc.usb0/control/ 697 697 # ln -s header/h class/fs 698 698 # ln -s header/h class/ss 699 699 # mkdir -p functions/uvc.usb0/streaming/uncompressed/u/360p