netlink: specs: tc: fix a couple of attribute names

Fix up spelling of two attribute names. These are clearly typoes
and will prevent C codegen from working. Let's treat this as
a fix to get the correction into users' hands ASAP, and prevent
anyone depending on the wrong names.

Fixes: a1bcfde8 ("doc/netlink/specs: Add a spec for tc")
Link: https://patch.msgid.link/20250513221316.841700-1-kuba@kernel.org


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