Fix buildkite pipeline

Author: charleskawczynski

.buildkite/pipeline.yml

@@ -328,7 +328,7 @@ steps:
         artifact_paths: "baroclinic_wave_equil/output_active/*"
         agents:
           slurm_constraint: icelake|cascadelake|skylake|epyc
-        slurm_mem: 20GB # columnwise!
+          slurm_mem: 20GB # columnwise!
 
       - label: ":computer: held suarez"
         key: held_suarez