fix: readme link

Author: aMahanna

README.md

@@ -1,6 +1,6 @@
 # nx-arangodb
 
-<a href="https://colab.research.google.com/github/arangodb/nx-arangodb/blob/main/docs/notebook.ipynb" target="_parent"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/></a>
+<a href="https://colab.research.google.com/github/arangodb/nx-arangodb/blob/main/docs/nx_arangodb.ipynb" target="_parent"><img src="https://colab.research.google.com/assets/colab-badge.svg" alt="Open In Colab"/></a>
 
 
 <div style="display: flex; align-items: center; gap: 10px;">