doc: devicetree: bindings: usb: Change descibe to describe in usbmisc-imx.txt

s/descibe/describe/
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com>
Link: https://lore.kernel.org/r/20210203153414.17044-1-unixbhaskar@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/devicetree/bindings/usb/usbmisc-imx.txt

 * Freescale i.MX non-core registers
 
 Required properties:
-- #index-cells: Cells used to descibe usb controller index. Should be <1>
+- #index-cells: Cells used to describe usb controller index. Should be <1>
 - compatible: Should be one of below:
 	"fsl,imx6q-usbmisc" for imx6q
 	"fsl,vf610-usbmisc" for Vybrid vf610