Is there a way to customize how “JIRA events" on a wiki calendar?

I’m pulling issues from JIRA and showing due dates on a wiki calendar. The wiki calendar shows “<issue key>– Release 1 (Due Date)”. “Release 1” is the issue summary. I’d like to have the ability to change what is shown on the calendar.

For example :

• Get rid of (due date) at the end
• Remove issue key 

 I’d like it to show “ summary – epic link”. 

I found similar request in confluence questions, unfortunately no answer for the question. 

https://community.atlassian.com/t5/Confluence-questions/Can-I-change-the-way-JIRA-issues-display-in-Team-Calendars/qaq-p/332748