cfg80211: fix multi scheduled scan kernel-doc

Replace @results_wk with @report_results, which was missed
in an earlier patch between revisions thereof.

Fixes: b34939b9

 ("cfg80211: add request id to cfg80211_sched_scan_*() api")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>