Update docs/source/programming/port-fowarding.md

Co-authored-by: Igor Tatarnikov <61896994+IgorTatarnikov@users.noreply.github.com>

Author: lauraporta

docs/source/programming/port-fowarding.md

@@ -53,7 +53,7 @@ Jupyter will start and display a link with a token.
 On **your local machine**, open a separate terminal and run:
 
 ```bash
-ssh -N <SWC-USERNAME>@<node-name> -J <SWC-USERNAME>@ssh.swc.ucl.ac.uk,<SWC-USERNAME>@<node-name> -L 8082:localhost:8082
+ssh -N <SWC-USERNAME>@<node-name> -J <SWC-USERNAME>@ssh.swc.ucl.ac.uk,<SWC-USERNAME>@hpc-gw2 -L 8082:localhost:8082
 ```
 
 Replace `<node-name>` with the actual name of the compute node assigned to you (e.g., `gpu-sr670-20`). This command establishes a secure tunnel between your laptop and the node.