Fix outdated steps_offset in scheduler_config

scheduler/scheduler_config.json

@@ -13,5 +13,6 @@
   "solver_order": 2,
   "solver_type": "midpoint",
   "thresholding": false,
-  "trained_betas": null
-}
+  "trained_betas": null,
+  "steps_offset": 1
+}