ChartJs, Draw straight lines in bar chart [closed]

THE EXPECTED

My current code:

JS

var data = {
            labels: ["UNO"],
            datasets: [
                {
                    label: "Semestre 2017-I",
                    borderWidth: 1,
                    data: [10]
                }
            ]
        };            

var ctx = document.getElementById("ctx");

var myBarChart = new Chart(ctx, {
  type: 'bar',
  data: data
});

HTML

<div>
<canvas id="ctx" width="600" height="400"></canvas>

link