Fix example code indent

Author: ChALkeR

index.html

@@ -32,16 +32,16 @@ <h2 id="project_tagline">A QML engine in a web browser.</h2>
 import QtQuick 2.0
 
 Rectangle {
- width: 500; height: 200
- color: "lightgray"
+  width: 500; height: 200
+  color: "lightgray"
 
- Text {
-   id: helloText
-   text: "Hello world!"
-   anchors.verticalCenter: parent.verticalCenter
-   anchors.horizontalCenter: parent.horizontalCenter
-   font.pointSize: 24; font.bold: true
- }
+  Text {
+    id: helloText
+    text: "Hello world!"
+    anchors.verticalCenter: parent.verticalCenter
+    anchors.horizontalCenter: parent.horizontalCenter
+    font.pointSize: 24; font.bold: true
+  }
 }
 </textarea>
     </div>