fix

viewer.html

@@ -274,6 +274,14 @@
 					</a>
 				</li>
 				<li>
+					<a href="examples/face_tracking/">Face Tracking</a>
+					<a class="source" href="https://github.com/mozilla/webxr-polyfill/blob/master/examples/face_tracking/index.html">source</a>
+					<p>Face tracker.</p>
+					<a class="img" href="examples/face_tracking/">
+						<img src="examples/face_tracking/screenshot.jpg" width="300" height="200"/>
+					</a>
+				</li>
+						<li>
 					<a href="examples/sensing/">World Sensing</a>
 					<a class="source" href="https://github.com/mozilla/webxr-polyfill/blob/master/examples/sensing/index.html">source</a>
 					<p>Show world sensing data from WebXR.</p>