greekreader: Fix the Plato's republic translation

[telpirion]

Code from manifest:

            WorkInfo(
                id = "PlatoRep",
                title = "Republic",
                author = "Plato",
                editor = "John Burnet",
                translator = "Paul Shorey",
                englishTitle = "Republic",
                englishAuthor = "Plato",
                location = R.raw.gk_plat_rep_gk,
                englishLocation = R.raw.plat_rep_eng,
                workType = WorkInfo.WorkType.PROSE)