[ci skip] Fix Robyn benchmark_config.json (#7799)

frameworks/Python/robyn/benchmark_config.json

@@ -17,9 +17,7 @@
         "display_name": "Robyn",
         "notes": "",
         "versus": "None"
-      }
-    },
-    {
+      },
       "const": {
         "plaintext_url": "/plaintext",
         "port": 8080,
@@ -38,4 +36,4 @@
       }
     }
   ]
-}
+}