Fix small markdown error

HPC_Python_Guide.md

@@ -162,14 +162,14 @@ Credit goes to Niels Jeppesen who figured all this out.
         or http://127.0.0.1:44000/lab?token=401720c25a3e9411a5f28d9015591b19a9032fc90989ffa0
    ```
 
-5. Open a terminal on your own computer and run
+6. Open a terminal on your own computer and run
    ```
    ssh <USERNAME>@login2.hpc.dtu.dk -g -L44000:<HOSTNAME>:44000 -N
    ```
    where `<USERNAME>` is your DTU user name and `<HOSTNAME>` is the hostname you found in step 3.
    This should prompt you for your DTU password, _**and then NOTHING SHOULD HAPPEN**_.
 
-6. Open your browser and enter the URL printed in step 5 that starts with `127.0.0.1`
+7. Open your browser and enter the URL printed in step 5 that starts with `127.0.0.1`
    (e.g. `http://127.0.0.1:44000/lab?token=401720c25a3e9411a5f28d9015591b19a9032fc90989ffa0`).
    This should open the Jupyter interface. Any commands you run will be executed on the HPC
    cluster.