Fix broken path

Author: emackey

index.html

@@ -31,7 +31,7 @@
             <li>
                 <a href="Apps/CesiumViewer/index.html?inspector=true">Cesium Inspector</a>
                 (with <a href="Apps/Sandcastle/gallery/Cesium%20Inspector.html">example primitives</a>)
-                (with <a href="Apps/CesiumViewer/index.html?source=Gallery/simple.czml&inspector=true">simple CZML</a>)
+                (with <a href="Apps/CesiumViewer/index.html?source=../SampleData/simple.czml&inspector=true">simple CZML</a>)
             </li>
             <li>
                 <a href="Apps/TimelineDemo/index.html">Timeline Demo</a>