ynl: expose xdp-zc-max-segs

Also rename it to dashes, to match the rest. And fix unrelated
spelling error while we're at it.

Signed-off-by: Stanislav Fomichev <sdf@google.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20230727163001.3952878-2-sdf@google.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>