fixes for Jupyter related pages

doc.zih.tu-dresden.de/docs/access/jupyterlab.md

@@ -2,6 +2,35 @@
 
 ## Access without JupyterHub
 
+   ```console
+   [marie@login ~]$ start_jupyterlab.sh
+   ```
+
+![profile select](misc/jupyterlab_wout_hub.png)
+{: align="center"}
+
+   ```console
+   Starting JupyterLab...
+   Submitted batch job 1984
+   [marie@login ~]$
+   ```
+
+Do not disconnect/logout.
+Wait until you receive a message with further instructions on how to connect to yours lab session.
+
+   ```console
+   Message from marie@login on <no tty> at 14:22 ...
+
+    At your local machine, run: 
+    ssh marie@login.<cluster>.hpc.tu-dresden.de -NL 8946:<node>:8138
+
+    and point your browser to http://localhost:8946/?token=M7SHy...5HnsY...GMaRj0e2X
+    To stop this notebook, run 'scancel 1984'
+   EOF
+   ```
+
+#### Other alternative for starting your jupyterlab
+
 === "alpha"
 
     ```console

doc.zih.tu-dresden.de/docs/access/jupyterlab_user.md

@@ -10,7 +10,7 @@ Is it now possible to install your custom JupyterLab.
 
 !!! warning
 
-    Installing a custom JupyterLab is not will be not mantained by our technicias.
+    Please note that our technicias will not mantain your own JupyterLab installation.
 
 Please understand that JupyterLab is a complex software system of which we are
 not the developers and don't have any downstream support contracts for, so we