ft: 完善代码

src/eFmt.erl

@@ -412,7 +412,7 @@ writeBinary(<<>>, _Depth, _Width, _Encoding, _Strings) ->
 writeBinary(Bin, Depth, Width, Encoding, Strings) ->
    case Strings andalso visualBin(Bin, Encoding) of
       true ->
-         <<"<<\"", Bin/binary, "\">>">>;
+         <<"<<\"", Bin/binary, "\"/utf8>>">>;
       _ ->
          writeBinary(Bin, Depth, Width, Encoding, Strings, 0, <<"<<">>)
    end.