🐛 Fix typos in shellbench runs

results/gemma4-31b-fp8-shellbench-openclaw.json

@@ -44,4 +44,5 @@
         "mean_cost_usd_per_task": 0.07,
         "mean_total_time_seconds_per_task": 317,
         "mean_agent_time_seconds_per_task": 259
-    }
+    }
+}

results/qwen3-6-27b-fp8-shellbench-openclaw.json

@@ -44,4 +44,5 @@
         "mean_cost_usd_per_task": 0.05,
         "mean_total_time_seconds_per_task": 147,
         "mean_agent_time_seconds_per_task": 94
-    }
+    }
+}