update docstring example

Author: yiyixuxu

src/diffusers/pipelines/hunyuan_image/pipeline_hunyuanimage.py

@@ -47,7 +47,7 @@
         >>> from diffusers import HunyuanImagePipeline
 
         >>> pipe = HunyuanImagePipeline.from_pretrained(
-        ...     "hunyuanvideo-community/HunyuanVideo", torch_dtype=torch.bfloat16
+        ...     "hunyuanvideo-community/HunyuanImage-2.1-Diffusers", torch_dtype=torch.bfloat16
         ... )
         >>> pipe.to("cuda")
         >>> prompt = "A cat holding a sign that says hello world"

src/diffusers/pipelines/hunyuan_image/pipeline_hunyuanimage_refiner.py

@@ -46,13 +46,14 @@
         >>> from diffusers import HunyuanImageRefinerPipeline
 
         >>> pipe = HunyuanImageRefinerPipeline.from_pretrained(
-        ...     "hunyuanvideo-community/HunyuanImageRefiner", torch_dtype=torch.bfloat16
+        ...     "hunyuanvideo-community/HunyuanImage-2.1-Refiner-Diffusers", torch_dtype=torch.bfloat16
         ... )
         >>> pipe.to("cuda")
         >>> prompt = "A cat holding a sign that says hello world"
+        >>> image = load_image("path/to/image.png")
         >>> # Depending on the variant being used, the pipeline call will slightly vary.
         >>> # Refer to the pipeline documentation for more details.
-        >>> image = pipe(prompt, negative_prompt="", num_inference_steps=50).images[0]
+        >>> image = pipe(prompt, image=image, num_inference_steps=4).images[0]
         >>> image.save("hunyuanimage.png")
         ```
 """