[Misc] Fix docs and update image edit example with cache-dit (#318)

Signed-off-by: samithuang <285365963@qq.com>

docs/user_guide/examples/offline_inference/image_to_image.md

@@ -1,6 +1,6 @@
 # Image-To-Image
 
-Source <https://github.com/vllm-project/vllm-omni/tree/main/examples/offline_inference/image_to_image>. Added in PR [#196](https://github.com/vllm-project/vllm-omni/pull/196).
+Source <https://github.com/vllm-project/vllm-omni/tree/main/examples/offline_inference/image_to_image>.
 
 
 This example edits an input image with `Qwen/Qwen-Image-Edit` using the `image_edit.py` CLI.

docs/user_guide/examples/offline_inference/text_to_image.md

@@ -3,11 +3,22 @@
 Source <https://github.com/vllm-project/vllm-omni/tree/main/examples/offline_inference/text_to_image>.
 
 
-This folder provides two simple entrypoints for experimenting with `Qwen/Qwen-Image` `Tongyi-MAI/Z-Image-Turbo` using vLLM-Omni:
+This folder provides several entrypoints for experimenting with `Qwen/Qwen-Image` `Tongyi-MAI/Z-Image-Turbo` using vLLM-Omni:
 
-- `text_to_image.py`: command-line script for single image generation.
+- `text_to_image.py`: command-line script for single image generation with advanced options.
 - `web_demo.py`: lightweight Gradio UI for interactive prompt/seed/CFG exploration.
 
+## Basic Usage
+
+```python
+from vllm_omni.entrypoints.omni import Omni
+
+if __name__ == "__main__":
+    omni = Omni(model="Qwen/Qwen-Image")
+    prompt = "a cup of coffee on the table"
+    images = omni.generate(prompt)
+    images[0].save("coffee.png")
+```
 
 ## Local CLI Usage
 

docs/user_guide/examples/offline_inference/text_to_video.md

@@ -1,6 +1,6 @@
 # Text-To-Video
 
-Source <https://github.com/vllm-project/vllm-omni/tree/main/examples/offline_inference/text_to_video>. Added in PR [#202](https://github.com/vllm-project/vllm-omni/pull/202).
+Source <https://github.com/vllm-project/vllm-omni/tree/main/examples/offline_inference/text_to_video>.
 
 
 The `Wan-AI/Wan2.2-T2V-A14B-Diffusers` pipeline generates short videos from text prompts.
@@ -36,5 +36,5 @@ Key arguments:
 
 ??? abstract "text_to_video.py"
     ``````py
-    --8<-- "examples/offline_inference/wan22/text_to_video.py"
+    --8<-- "examples/offline_inference/text_to_video/text_to_video.py"
     ``````