docs: add terminal image

Readme.md

@@ -27,7 +27,9 @@ Mobile Cartography Jupyter Lab Workshop.
 4. Select `Barnard - 2 core, 3G, 4 hours`
 4. **Click Start** to spawn a Jupyter Lab instance on the TUD ZIH Jupyter Hub.  
     - The Workshop is _not_ automatically setup in the new system yet
-    - Once JupyterHub started, open a `Terminal` Window and copy the following command:
+    - Once JupyterHub started, open a `Terminal` Window 
+      ![Startup Jupyter Hub](resources/terminal_jup.webp)
+    - .. and copy &paste the following command, confirm with <kbd>Enter</kbd>:
     ```bash
     cd /home/$USER && \
         git clone https://gitlab.hrz.tu-chemnitz.de/tud-ifk/jupyter_python_datascience.git