Add udev update instructions to the documentation

[nondiremanuel]

I was giving a try to Bacca and launching the GUI I got the following message:

The device was actually connected and unlocked but apparently it was not detected. Below you can find the log from the polling:

[2024-06-06 14:43:36][ledger_manager_gui::ledger_service][INFO] LedgerService::send_to_gui(Connected(None, None))

I solved it by running the following commands: https://github.com/LedgerHQ/udev-rules/blob/master/add_udev_rules.sh

It could be helpful to add such indications in the documentation.