update stable zephyr notebook on the latest stateful model support (#…

…1544)

* update stable zephyr notebook on the latest stateful model support

* Update 273-stable-zephyr-3b-chatbot.ipynb

* update outputs

README.md

@@ -222,6 +222,7 @@ Demos that demonstrate inference on a particular model.
 | [270-sound-generation-audioldm2](notebooks/270-sound-generation-audioldm2/)<br> | Sound Generation with AudioLDM2 and OpenVINO™ | <img src="https://github.com/openvinotoolkit/openvino_notebooks/assets/76463150/c93a0f86-d9cf-4bd1-93b9-e27532170d75" width=225> |
 | [271-sdxl-turbo](notebooks/271-sdxl-turbo/)<br> | Single-step image generation using SDXL-turbo and OpenVINO | <img src="https://github.com/openvinotoolkit/openvino_notebooks/assets/29454499/79b625c7-0f0a-4f19-8e38-e6f896f75c3e" width=225> |
 | [272-paint-by-example](notebooks/272-paint-by-example/)<br>| Exemplar based image editing using diffusion models, [Paint-by-Example](https://github.com/Fantasy-Studio/Paint-by-Example), and OpenVINO™ | <img width="225" alt="ui_example" src="https://user-images.githubusercontent.com/103226580/236958011-0550ba7b-19b3-4dc6-8b50-eaedb84c1681.png"> |
+| [273-stable-zephyr-3b-chatbot](notebooks/273-stable-zephyr-3b-chatbot)<br> |  Use Stable-Zephyr as chatbot assistant with OpenVINO | <img src=https://github.com/openvinotoolkit/openvino_notebooks/assets/29454499/cfac6ddb-6f22-4343-855c-e513269cf2bf width=225> |
 | [274-efficient-sam](notebooks/274-efficient-sam/)<br>| Object segmentation with EfficientSAM and OpenVINO™ | <img width="225" src="https://github.com/openvinotoolkit/openvino_notebooks/assets/29454499/15d0a23a-0550-43c6-9ca9-f689e772a79a"> |
 | [275-llm-question-answering](notebooks/275-llm-question-answering)<br> | LLM Instruction following pipeline | <img src=https://github.com/openvinotoolkit/openvino_notebooks/assets/29454499/daafd702-5a42-4f54-ae72-2e4480d73501 width=225> |