chore[docs]: Recommend ethernet tether over port forwarding for VH-109

[samfreund]

closes #1825

The new radio has four ethernet ports, and one dedicated port for the DS. There's no reason for teams to tether to the roborio via USB-B, and tethering via radio will provide more realistic match conditions. Therefore, recommend tethering via radio.

Merge checklist:

• Pull Request title is short, imperative summary of proposed changes
• The description documents the what and why
• If this PR changes behavior or adds a feature, user documentation is updated
• If this PR touches photon-serde, all messages have been regenerated and hashes have not changed unexpectedly
• If this PR touches configuration, this is backwards compatible with settings back to v2024.3.1
• If this PR addresses a bug, a regression test for it is added

[samfreund]

Not sure why the linting is failing, I'll run the linger when I make it home.

We discussed it in the discord

Fixed