Add screenshot

Readme.md

@@ -35,7 +35,8 @@ Mobile Cartography Jupyter Lab Workshop.
         git clone https://gitlab.hrz.tu-chemnitz.de/tud-ifk/jupyter_python_datascience.git
     ```
     - this will clone the workshop repository to your local user folder (left side)
-    - open `jupyter_python_datascience/01_raw_intro.ipynb` in the explorer on the left and start following the instructions
+    - open `jupyter_python_datascience/notebooks/01_raw_intro.ipynb` in the explorer on the left and start following the instructions  
+      ![Startup Jupyter Hub](resources/notebook_jup.webp)
 
 ## Taurus (old): Start Jupyter Lab