Update How-to-create-VR-content.html

docs/manual/zh/introduction/How-to-create-VR-content.html

@@ -65,7 +65,7 @@ renderer.setAnimationLoop( function () {
 		请查看官方示例中与WebVR相关的示例，了解这一工作流程的实际使用、运行情况。
 		<br /><br />
 
-		[example:webxr_vr_ballshooter WebXR / VR / ballshoter]<br />
+		[example:webxr_vr_ballshooter WebXR / VR / ballshooter]<br />
 		[example:webxr_vr_cubes WebXR / VR / cubes]<br />
 		[example:webxr_vr_dragging WebXR / VR / dragging]<br />
 		[example:webxr_vr_lorenzattractor WebXR / VR / lorenzattractor]<br />