Update Chapter10.md

Chapter10/Chapter10.md

 # Material for Chapter 10
 
-The notebook the exercise in Chapter 10 is available from this link:
+The notebook the exercise in Chapter 10 is available from here:
+[Notebook for mini U-net](https://github.com/vedranaa/teaching-notebooks/blob/main/02506_week10_MiniUnet.ipynb)
+
+You can aslo open it directly in Google Colab from here:
 [![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/vedranaa/teaching-notebooks/blob/main/02506_week10_MiniUnet.ipynb)