Update docs for issue boards
What does this MR do and why?
Updates docs for issue boards
- Update screenshots
- Adjust copy related to epic swimlanes
- Adjust copy related to creating new lists
MR acceptance checklist
Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.
How to set up and validate locally
- Check out this branch
- Ensure that you have gitlab-docs enabled on the GDK (cf. https://gitlab.com/gitlab-org/gitlab-development-kit/-/blob/main/doc/howto/gitlab_docs.md)
- Visit http://gdk.test:3005/ee/user/project/issue_board.html
Related to #461703 (closed) Related to #452225 (closed)
Edited by Chad Lavimoniere