Fixed broken link to youtube.

src/docs/asciidoc/jme3/rise_of_mutants_project.adoc

@@ -25,6 +25,8 @@ Features:
 
 - LightBlow Shader is used.
 
- ScreenShot: link:https://i.imgur.com/uFRw4.jpg[https://i.imgur.com/uFRw4.jpg]
+ScreenShot: link:https://i.imgur.com/uFRw4.jpg[https://i.imgur.com/uFRw4.jpg]
 
- Video: link:https://www.youtube.com/watch?v=_aFSEJlISyI&feature=player_embedded[https://www.youtube.com/watch?v=_aFSEJlISyI&feature=player_embedded]
+Video:
+
+image::jme3/riseofmutants3.jpg[youtu.be/_aFSEJlISyI,width="",height="",link="https://youtu.be/_aFSEJlISyI"]