## Environment * OS Version: Ubuntu 24.04 * Binary version 8.9.0 ## Description * Expected behavior: the tutorial [SDF worlds](https://gazebosim.org/docs/latest/sdf_worlds/) says "You can also download the finished world for this tutorial from [here](https://github.com/gazebosim/docs/blob/master/ionic/tutorials/sdf_worlds/world_demo.sdf)". * Actual behavior: the sdf at [world_demo.sdf](https://github.com/gazebosim/docs/blob/master/ionic/tutorials/sdf_worlds/world_demo.sdf) lacks many of the sections described in the tutorial, i.e. it's not "finished".