Fix missing closing tag in line chart example (#514)

Author: marc-ed-raffalli

.gitignore

@@ -1,4 +1,5 @@
 .idea/
+*.iml
 node_modules/
 test/fixtures/shots/
 coverage/

examples/charts.template.html

@@ -185,8 +185,8 @@ <h1>Directives</h1>
             <tab heading="Markup">
             <pre><code data-language="html">&lt;canvas id=&quot;line&quot; class=&quot;chart chart-line&quot; chart-data=&quot;data&quot;
 chart-labels=&quot;labels&quot; chart-series=&quot;series&quot; chart-options=&quot;options&quot;
-chart-dataset-override=&quot;datasetOverride&quot; chart-click=&quot;onClick&quot;
-&lt;/canvas&gt; </code></pre>
+chart-dataset-override=&quot;datasetOverride&quot; chart-click=&quot;onClick&quot;&gt;
+&lt;/canvas&gt;</code></pre>
             </tab>
             <tab heading="Javascript">
               <pre><code data-language="javascript">angular.module("app", ["chart.js"]).controller("LineCtrl", function ($scope) {