Fix those warnings:
	Documentation/linux_tv/media/v4l/open:38: WARNING: Literal block ends without a blank line; unexpected unindent.
	Documentation/linux_tv/media/v4l/open:45: WARNING: Literal block ends without a blank line; unexpected unindent.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>