Update README.md

Author: pstrope

README.md

@@ -144,7 +144,7 @@ Input to EGAPx is in the form of a YAML file.
     - use `-e aws` for AWS batch using Docker image
     - use `-e docker` for using Docker image
     - use `-e singularity` for using the Singularity image
-    - use '-e slurm` for using SLURM in your HPC.
+    - use `-e slurm` for using SLURM in your HPC.
         - Note that for this option, you have to edit `./egapx_config/slurm.config` according to your cluster specifications.
     - type `python3 ui/egapx.py  -h ` for the help menu