Update insitu.md

docs.it4i/software/viz/insitu.md

-!!!warning
-    This page has not been updated yet. The page does not reflect the transition from PBS to Slurm.
-
 # In Situ Visualization
 
 ## Introduction
@@ -84,13 +81,13 @@ Whether you use the client-server mode or VNC for ParaView, you have to allocate
 For the client-server mode of ParaView we allocate the resources by
 
 ```console
-$ qsub -I -q qprod -A PROJECT-ID -l select=2
+$ salloc -p qcpu -A PROJECT_ID --nodes=2
 ```
 
-In the case of VNC connection, we use X11 forwarding by the `-X` option to allow the graphical environment on the interactive session:
+In the case of VNC connection, we use X11 forwarding by the `--x11` option to allow the graphical environment on the interactive session:
 
 ```console
-$ qsub -IX -q qprod -A PROJECT-ID -l select=2
+$ salloc -p qcpu -A PROJECT_ID --nodes=2 --x11
 ```
 
 The issued console commands launch the interactive session on 2 nodes. This is the minimal setup to test that the simulator/adaptor code runs on multiple nodes.