Add chat_completion and remove conversational from Inference guide (

#2215)

* Add chat_completion and remove conversational from docs

* Update docs/source/en/guides/inference.md

Co-authored-by: Julien Chaumond <julien@huggingface.co>

---------

Co-authored-by: Julien Chaumond <julien@huggingface.co>

docs/source/en/guides/inference.md

@@ -133,7 +133,8 @@ has a simple API that supports the most common tasks. Here is a list of the curr
 | | [Zero-Shot-Image-Classification](https://huggingface.co/tasks/zero-shot-image-classification) | ✅ | [`~InferenceClient.zero_shot_image_classification`] |
 | Multimodal | [Documentation Question Answering](https://huggingface.co/tasks/document-question-answering) | ✅ | [`~InferenceClient.document_question_answering`]
 | | [Visual Question Answering](https://huggingface.co/tasks/visual-question-answering) | ✅ | [`~InferenceClient.visual_question_answering`] |
-| NLP | [Conversational](https://huggingface.co/tasks/conversational) | ✅ | [`~InferenceClient.conversational`] |
+| NLP | Conversational | | *deprecated*, use Chat Completion |
+| | [Chat Completion](https://huggingface.co/tasks/text-generation) | ✅ | [`~InferenceClient.chat_completion`] |
 | | [Feature Extraction](https://huggingface.co/tasks/feature-extraction) | ✅ | [`~InferenceClient.feature_extraction`] |
 | | [Fill Mask](https://huggingface.co/tasks/fill-mask) | ✅ | [`~InferenceClient.fill_mask`] |
 | | [Question Answering](https://huggingface.co/tasks/question-answering) | ✅ | [`~InferenceClient.question_answering`]