cleaned up demos

Author: williamFalcon

examples/multi_node_examples/README.md

@@ -6,5 +6,5 @@ To run this demo which launches a single job that trains on 2 nodes (2 gpus per
 2. Create a conda environment with Lightning and a GPU PyTorch version.   
 3. Submit this script.   
 ```bash
-bash job_submit.sh your_env_name_with_lightning_installed
+sbatch job_submit.sh your_env_name_with_lightning_installed
 ```