Correct `sample_size` of Stable Diffusion 1's unet to have correct width and height default (#1)

- Correct `sample_size` of Stable Diffusion 1's unet to have correct width and height default (4c6f901de3d1afeab9d1cfeddb4c69f3d6ac9f0d)


Co-authored-by: Patrick von Platen <patrickvonplaten@users.noreply.huggingface.co>

unet/config.json

@@ -27,7 +27,7 @@
   "norm_eps": 1e-05,
   "norm_num_groups": 32,
   "out_channels": 4,
-  "sample_size": 32,
+  "sample_size": 64,
   "up_block_types": [
     "UpBlock2D",
     "CrossAttnUpBlock2D",