wifi: iwlwifi: fix firmware API kernel doc

Fix the comment of the associated struct of the
wowlan info notification.

Signed-off-by: Shaul Triebitz <shaul.triebitz@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240311081938.2ea25f49489b.I83fa1cdc39f74ad2aacf75c2c14412eeaf93e787@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>