I'm not sure I understand the question - "rendering style for build in field summary" is unclear - do you mean the summary field? Or is "build" the field?
If you are talking about the standard "summary" field, then there is no rendering options because it is a simple short-text field, and they don't need rendering.
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
We're bringing product updates and pro tips on teamwork to ten cities around the world.Save your spot