config file correction

benchmarks/nhcal_acceptance/config.yml

@@ -4,7 +4,7 @@ sim:nhcal_acceptance:
   parallel:
     matrix:
       - ENERGY: ["1GeV", "5GeV", "10GeV"]
-      - INDEX: ["00","01","02","03","04","05","06","07","08","09"]
+        INDEX: ["00","01","02","03","04","05","06","07","08","09"]
   script:
     - snakemake --cores 5 sim_output/nhcal_acceptance/E${ENERGY}/sim_epic_backward_hcal_only.${INDEX}.edm4hep.root