Fix demofusion (#6049)

* Update pipeline_demofusion_sdxl.py

* Update README.md

examples/community/README.md

@@ -2870,10 +2870,14 @@ The original repo can be found at [repo](https://github.com/PRIS-CV/DemoFusion).
 - `show_image` (`bool`, defaults to False):
   Determine whether to show intermediate results during generation.
 ```
-from pipeline_demofusion_sdxl import DemoFusionSDXLPipeline
+from diffusers import DiffusionPipeline
 
-model_ckpt = "stabilityai/stable-diffusion-xl-base-1.0"
-pipe = DemoFusionSDXLPipeline.from_pretrained(model_ckpt, torch_dtype=torch.float16)
+pipe = DiffusionPipeline.from_pretrained(
+    "stabilityai/stable-diffusion-xl-base-1.0",
+    custom_pipeline="pipeline_demofusion_sdxl",
+    custom_revision="main",
+    torch_dtype=torch.float16,
+)
 pipe = pipe.to("cuda")
 
 prompt = "Envision a portrait of an elderly woman, her face a canvas of time, framed by a headscarf with muted tones of rust and cream. Her eyes, blue like faded denim. Her attire, simple yet dignified."

examples/community/pipeline_demofusion_sdxl.py

@@ -36,7 +36,9 @@ from diffusers.utils.torch_utils import randn_tensor
 
 
 if is_invisible_watermark_available():
-    from .watermark import StableDiffusionXLWatermarker
+    from diffusers.pipelines.stable_diffusion_xl.watermark import (
+        StableDiffusionXLWatermarker,
+    )
 
 
 logger = logging.get_logger(__name__)  # pylint: disable=invalid-name