point to sdk image

docs/modules/sdk/pages/scene_explorer.adoc

@@ -5,7 +5,7 @@
 
 
 
-image::sdk/jmonkeyplatform-sceneexplorer-add.jpg[jmonkeyplatform-sceneexplorer-add.jpg,width="",height="",align="center"]
+image::jmonkeyplatform-sceneexplorer-add.jpg[jmonkeyplatform-sceneexplorer-add.jpg,width="",height="",align="center"]