Update scheduler/scheduler_config.json

Hey!

We have introduced a steps_offset variable to scheduler configs to have a cleaner API and now want to incentivize SD schedulers to add this to the config as otherwise it'll eventually lead to silent errors.
See: https://github.com/huggingface/diffusers/blob/7258dc4943e73b8799003771e86a44424afb996d/src/diffusers/pipelines/stable_diffusion/pipeline_stable_diffusion.py#L60

Best,
Diffusers Team!

scheduler/scheduler_config.json

@@ -6,5 +6,6 @@
   "beta_start": 0.00085,
   "num_train_timesteps": 1000,
   "skip_prk_steps": true,
-  "trained_betas": null
+  "trained_betas": null,
+  "steps_offset": 1
 }