Custom Requests - Groovy - Notification

Hello All,

Created a custom request to send a notification using groovy, based on some conditions, the notification is getting triggered successfully. However, the URL which is present in the notification is going as a text instead of a URL, and is not click enabled.

returnMap.put("ConnextEnglishMessage","Over credit limit. Please email XXX@XXX.ca https://it.abc.ca/123/app/#/events/details");

Kindly advise how we can make the URL as clickable in the notification.

Thank you in advance.

-Regards,