hv: fix comment typo in vmbus_channel/low_latency

morev vs. more.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Link: https://lore.kernel.org/r/20221105115401.21592-1-olaf@aepfle.de


Signed-off-by: Wei Liu <wei.liu@kernel.org>