Update UX Forum docs to reflect automated post-session tasks
Summary
The DesignOps UX Forum automation now handles the two manual post-session host tasks:
- Removing the completed session row from the schedule (via MR)
- Creating the tracking issue for the next session (pre-filled with host and speaker handles)
This MR updates the handbook to reflect that:
- Hosting section: Removes the sentence about manually creating tracking issues using the template
- Updating the schedule section: Replaces the manual steps with a description of what the automation does, and a note reminding editors to include
(@handle)in schedule entries
Related: gitlab-com/designops#23 (closed)" true