i2cget: add mode character for SMBus block read to manpage

The text was updated, but the mode character was forgotten.

Fixes: 789af53 ("i2cget: Add support for SMBus block read")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
1 file changed