Fix a typo inside the dwc3 struct docs.

Fixes: 63d7f981 ("usb: dwc3: core: Enable GUCTL1 bit 10 for fixing termination error after resume bug")
Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20230302150706.229008-1-vincenzopalazzodev@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>