Update README.md

Forecast/Sales Forecast for retail store/README.md

 # Sales Forecast for retail store
 >see __German Version__ [below](#German_version)
 
-<a href="https://colab.research.google.com/github/AlexRossmann/ml-services/blob/main/Forecast/Sales%20Forecast%20for%20retail%20store/notebook.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open Notebook In Google Colab"/></a>  
+<a href="https://colab.research.google.com/github/AlexRossmann/machine-learning-services/blob/main/Forecast/Sales%20Forecast%20for%20retail%20store/notebook.ipynb"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open Notebook In Google Colab"/></a>