[website] Fix apache pulsar events calendar (apache#3099)

*Motivation*

Fix apache pulsar events calendar link

site2/website/pages/en/events.js

@@ -12,7 +12,7 @@ const translate = require('../../server/translate.js').translate;
 
 const siteConfig = require(`${CWD}/siteConfig.js`);
 
-const iframeSrc = "https://calendar.google.com/calendar/embed?showTitle=0&showPrint=0&showCalendars=0&mode=AGENDA&height=300&wkst=1&hl=en&bgcolor=%23FFFFFF&src=22kknj432ap5io49lvsjaac71o%40group.calendar.google.com&color=%232952A3&ctz=America%2FLos_Angeles";
+const iframeSrc = "https://calendar.google.com/calendar/embed?height=600&wkst=1&bgcolor=%23FFFFFF&src=apache.pulsar.slack%40gmail.com&color=%23875509";
 
 class Events extends React.Component {
   render() {