Fix markup formatting

Author: Bravo27

README.md

@@ -7,7 +7,8 @@ This demo shows how well the real-time positions of objects in a multiplayer 3D
 ## Live Demo
 
 [![screenshot](screen_shot_rendering.png)](http://demos.lightstreamer.com/3DWorldDemo)
-###[![](http://demos.lightstreamer.com/site/img/play.png) View live demo](http://demos.lightstreamer.com/3DWorldDemo)
+
+### [![](http://demos.lightstreamer.com/site/img/play.png) View live demo](http://demos.lightstreamer.com/3DWorldDemo)
 
 ## Details