Add train video (#77)

Co-authored-by: icoxfog417 <[email protected]>

Author: icoxfog417

README.md

@@ -77,7 +77,7 @@
 |4    |Analyze|データから価値を創出できるか診断する|[![Open in SageMaker Studio Lab](https://studiolab.sagemaker.aws/studiolab.svg)](https://studiolab.sagemaker.aws/import/github/aws-samples/aws-ml-enablement-handson/blob/main/notebooks/02_analyze.ipynb)|[![YouTube](https://img.shields.io/badge/YouTube-%23FF0000.svg?style=for-the-badge&logo=YouTube&logoColor=white)](https://youtu.be/iYV4slOPoYE)|
 |5    |Prepare|診断結果に基づきデータを充足する|[![Open in SageMaker Studio Lab](https://studiolab.sagemaker.aws/studiolab.svg)](https://studiolab.sagemaker.aws/import/github/aws-samples/aws-ml-enablement-handson/blob/main/notebooks/03_prepare.ipynb)|[![YouTube](https://img.shields.io/badge/YouTube-%23FF0000.svg?style=for-the-badge&logo=YouTube&logoColor=white)](https://www.youtube.com/watch?v=Uwim4GSkSjw)|
 |6    |Preprocess|機械学習モデルが認識しやすいデータにする|[![Open in SageMaker Studio Lab](https://studiolab.sagemaker.aws/studiolab.svg)](https://studiolab.sagemaker.aws/import/github/aws-samples/aws-ml-enablement-handson/blob/main/notebooks/04_preprocess.ipynb)| [![YouTube](https://img.shields.io/badge/YouTube-%23FF0000.svg?style=for-the-badge&logo=YouTube&logoColor=white)](https://youtu.be/T0Y0bFLfrsE) |
-|7    |Train|機械学習モデルを学習する|[![Open in SageMaker Studio Lab](https://studiolab.sagemaker.aws/studiolab.svg)](https://studiolab.sagemaker.aws/import/github/aws-samples/aws-ml-enablement-handson/blob/main/notebooks/05_train.ipynb)|(Comming Soon)|
+|7    |Train|機械学習モデルを学習する|[![Open in SageMaker Studio Lab](https://studiolab.sagemaker.aws/studiolab.svg)](https://studiolab.sagemaker.aws/import/github/aws-samples/aws-ml-enablement-handson/blob/main/notebooks/05_train.ipynb)|[![YouTube](https://img.shields.io/badge/YouTube-%23FF0000.svg?style=for-the-badge&logo=YouTube&logoColor=white)](https://youtu.be/-SzZJmZWmOs)|
 |8    |Test|機械学習モデルを評価する|[![Open in SageMaker Studio Lab](https://studiolab.sagemaker.aws/studiolab.svg)](https://studiolab.sagemaker.aws/import/github/aws-samples/aws-ml-enablement-handson/blob/main/notebooks/06_test.ipynb)|(Comming Soon)|
 |9    |Ending|機械学習モデルの開発から運用へ|[![Markdown](https://img.shields.io/badge/markdown-%23000000.svg?style=for-the-badge&logo=markdown&logoColor=white)](docs/ending.md)|(Comming Soon)|