man/io_uring_setup.2: document IORING_SETUP_SINGLE_ISSUER
man/io_uring_setup.2: document IORING_SETUP_SINGLE_ISSUER

Signed-off-by: Pavel Begunkov <8608d41fe50396a9dbd36e830be65ba791e26c05@gmail.com>
Link: https://lore.kernel.org/r/9e282a50456df4451e28189bd3ac6e54d598ecc3.1658490521.git.8608d41fe50396a9dbd36e830be65ba791e26c05@gmail.com
Signed-off-by: Jens Axboe <cd8c6775e60d6f67a6984377324e5290df3d5358@kernel.dk>

axboe/liburing,axboe/liburing,axboe/liburing