Add 'sudo' to suggestions for launchd-related config fixes

[timsutton]

Description

When I ran through the installer and had remnants of the old Nix installer, I was running the suggested commands in another terminal and so had to remember to preface them with sudo. Just a small fix I figured might help with the suggestions! Feel free to take it if you deem appropriate.

Checklist

• Formatted with cargo fmt
• Built with nix build
• Ran flake checks with nix flake check
• Added or updated relevant tests (leave unchecked if not applicable)
• Added or updated relevant documentation (leave unchecked if not applicable)
• Linked to related issues (leave unchecked if not applicable)

Validating with install.determinate.systems

If a maintainer has added the upload to s3 label to this PR, it will become available for installation via install.determinate.systems:

curl --proto '=https' --tlsv1.2 -sSf -L https://install.determinate.systems/nix/pr/$PR_NUMBER | sh -s -- install

[Hoverbear]

Thank you!