Clarify panel dock defaults depend on layout in docs (#58654)

Self-Review Checklist:

- [x] I've reviewed my own diff for quality, security, and reliability
- [ ] Unsafe blocks (if any) have justifying comments
- [ ] The content is consistent with the [UI/UX
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)
- [ ] Tests cover the new/changed behavior
- [ ] Performance impact has been considered and is acceptable

Please check
https://github.com/zed-industries/zed/issues/56277#issuecomment-4417185748
for more context.

Release Notes:

- N/A or Added/Fixed/Improved ...
aeb8c1da93Xin Zhao committed on 6/6/2026, 12:14:13 AM· committed by GitHubparent0c660d0
3 files changedLine totals unavailable