Update multisite.md (#343)

docs/kb-articles/multisite.md

@@ -15,7 +15,7 @@ However, there is an easy way to scope the model results you get to only those r
 
 use Statamic\Facades\Site;
 
-public function scopeRunway($query)
+public function scopeRunwayListing($query)
 {
     $query->where('site', Site::selected()->handle());
 }