Update ipex notebook description (#645)

* Update ipex notebook description

* fix

Author: echarlaix

notebooks/ipex/README.md

@@ -5,5 +5,5 @@ You can find here a list of the notebooks for the IPEX integration in 🤗 Optim
 
 | Notebook     |      Description      |   |   |
 |:----------|:-------------|:-------------|------:|
-| [How to optimize your model with IPEX for text generation](https://github.com/huggingface/optimum-intel/blob/main/notebooks/ipex/ipex_text-generation.ipynb)| Show how to apply linear optimization with graph mode on a model using Intel [IPEX](https://github.com/intel/intel-extension-for-pytorch) for text-generation task. | [![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/huggingface/optimum-intel/blob/main/notebooks/ipex/ipex_text-generation.ipynb)| [![Open in AWS Studio](https://studiolab.sagemaker.aws/studiolab.svg)](https://studiolab.sagemaker.aws/import/github/huggingface/optimum-intel/blob/main/notebooks/ipex/ipex_text-generation.ipynb)|
+| [How to optimize your model with IPEX for text generation](https://github.com/huggingface/optimum-intel/blob/main/notebooks/ipex/text_generation.ipynb)| Show how to apply operators and graph-level optimizations using Intel [IPEX](https://github.com/intel/intel-extension-for-pytorch) | [![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/huggingface/optimum-intel/blob/main/notebooks/ipex/text_generation.ipynb)| [![Open in AWS Studio](https://studiolab.sagemaker.aws/studiolab.svg)](https://studiolab.sagemaker.aws/import/github/huggingface/optimum-intel/blob/main/notebooks/ipex/text_generation.ipynb)|