Update README.md

Author: finnBsch

README.md

@@ -112,7 +112,7 @@ You can run the code on an example, visualized in [rerun.io](https://rerun.io/)
 #### Docker
 You will need to have [rerun.io](https://rerun.io/) installed on the host for visualization.
 Ensure the docker is running and you are in the container as described in the [Docker setup](#setup-docker). Then launch
-the rerun viewer with:
+the rerun viewer **on the host** (not inside the docker) with:
 ```
 rerun
 ```
@@ -164,4 +164,4 @@ If you use this code in your research, please cite our paper:
       primaryClass={cs.RO},
       url={https://arxiv.org/abs/2409.11764}, 
 }
-```
+```