French translation: fix some errors and ortho (#513)

_TarkFrench

2019-10-26 c41f6509cf2758945fbc0810ff9d7ab0fc077228

 technic/machines/register/centrifuge_recipes.lua

@@ -14,6 +14,7 @@
   { "technic:bronze_dust 4",             "technic:copper_dust 3",       "technic:tin_dust"      },
   { "technic:stainless_steel_dust 4",    "technic:wrought_iron_dust 3", "technic:chromium_dust" },
   { "technic:brass_dust 3",              "technic:copper_dust 2",       "technic:zinc_dust"     },
   { "technic:chernobylite_dust",         "default:sand",                "technic:uranium3_dust" },
   { "default:dirt 4",                    "default:sand",                "default:gravel",       "default:clay_lump 2"     },
}