Fix code snippet for Grounding DINO (#32229)

Fix code snippet for grounding-dino

docs/source/en/model_doc/grounding-dino.md

@@ -41,33 +41,40 @@ The original code can be found [here](https://github.com/IDEA-Research/Grounding
 Here's how to use the model for zero-shot object detection:
 
 ```python
-import requests
-
-import torch
-from PIL import Image
-from transformers import AutoProcessor, AutoModelForZeroShotObjectDetection, 
-
-model_id = "IDEA-Research/grounding-dino-tiny"
-
-processor = AutoProcessor.from_pretrained(model_id)
-model = AutoModelForZeroShotObjectDetection.from_pretrained(model_id).to(device)
-
-image_url = "http://images.cocodataset.org/val2017/000000039769.jpg"
-image = Image.open(requests.get(image_url, stream=True).raw)
-# Check for cats and remote controls
-text = "a cat. a remote control."
-
-inputs = processor(images=image, text=text, return_tensors="pt").to(device)
-with torch.no_grad():
-    outputs = model(**inputs)
-
-results = processor.post_process_grounded_object_detection(
-    outputs,
-    inputs.input_ids,
-    box_threshold=0.4,
-    text_threshold=0.3,
-    target_sizes=[image.size[::-1]]
-)
+>>> import requests
+
+>>> import torch
+>>> from PIL import Image
+>>> from transformers import AutoProcessor, AutoModelForZeroShotObjectDetection
+
+>>> model_id = "IDEA-Research/grounding-dino-tiny"
+>>> device = "cuda"
+
+>>> processor = AutoProcessor.from_pretrained(model_id)
+>>> model = AutoModelForZeroShotObjectDetection.from_pretrained(model_id).to(device)
+
+>>> image_url = "http://images.cocodataset.org/val2017/000000039769.jpg"
+>>> image = Image.open(requests.get(image_url, stream=True).raw)
+>>> # Check for cats and remote controls
+>>> text = "a cat. a remote control."
+
+>>> inputs = processor(images=image, text=text, return_tensors="pt").to(device)
+>>> with torch.no_grad():
+...     outputs = model(**inputs)
+
+>>> results = processor.post_process_grounded_object_detection(
+...     outputs,
+...     inputs.input_ids,
+...     box_threshold=0.4,
+...     text_threshold=0.3,
+...     target_sizes=[image.size[::-1]]
+... )
+>>> print(results)
+[{'boxes': tensor([[344.6959,  23.1090, 637.1833, 374.2751],
+        [ 12.2666,  51.9145, 316.8582, 472.4392],
+        [ 38.5742,  70.0015, 176.7838, 118.1806]], device='cuda:0'),
+  'labels': ['a cat', 'a cat', 'a remote control'],
+  'scores': tensor([0.4785, 0.4381, 0.4776], device='cuda:0')}]
 ```
 
 ## Grounded SAM