Comment by layer8

Or allow a leading comma:

    {
    , home       = "/home/bill"
    , privateKey = "/home/bill/.ssh/id_ed25519"
    , publicKey  = "/home/blil/.ssh/id_ed25519.pub"
    }

Or, to make it markdown-ish:

    {
    - home       = "/home/bill"
    - privateKey = "/home/bill/.ssh/id_ed25519"
    - publicKey  = "/home/blil/.ssh/id_ed25519.pub"
    }

This is just to play with the idea that leading punctuation may be preferable because it all aligns in the same column.