fix scheduler execution rule

index.js

@@ -185,8 +185,9 @@ app.listen(APP_PORT, () =>
   console.log(`Example app listening on port ${APP_PORT}!`)
 );
 
-var rule = new schedule.RecurrenceRule();
-rule.seccond = 1;
+//TODO: based on node-schedule package author, setInterval is better suited for this kind of the job
+const rule = new schedule.RecurrenceRule();
+rule.second = 1;
 schedule.scheduleJob(rule, async function() {
   console.log(new Date(), "Crawler service started");
   await crawlAll();