Notification mails should indicate that the issue is a subtask

Notification mails include a first line that provides links to project and issue itself. Something like...

Some Project / ABC-456

The same format is used for both parent issues and sub issues.

If the issue is a sub issue JIRA View screen shows the same information as 

Some Project / ABC-123 (subject line) / ABC-456

Suggestion:

Make the notification emails also indicate that the issue (which is subject to the notification message) is a subtask of ABC-123(parent issue) with subject line.