Fixed relfileprefix attribute.

src/docs/asciidoc/jme3/external/blender/blender_ogre_compatibility.adoc

@@ -2,8 +2,8 @@
 :author:
 :revnumber:
 :revdate: 2016/03/17 20:48
-:relfileprefix: ../../
-:imagesdir: ../..
+:relfileprefix: ../../../
+:imagesdir: ../../..
 ifdef::env-github,env-browser[:outfilesuffix: .adoc]