fixed relative links to images

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

@@ -1,6 +1,8 @@
 = Blender Action Baking
 :author: mitm
 :revnumber: 1.0
+:relfileprefix: ../../../
+:imagesdir: ../../..
 ifdef::env-github,env-browser[:outfilesuffix: .adoc]
 
 There are many 3D model <<jme3/features.html#supported-external-file-types#,Supported External File Types>> for jMonkeyEngine. Some of them bake your actions automatically on export, others don't. Baking is a destructive process so it is recommended that you test the animation in-game first. If your animations are all messed up, try baking them or use a different exporter.

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

@@ -1,6 +1,8 @@
 = Blender Buffer Clearing
 :author: mitm
 :revnumber: 1.0
+:relfileprefix: ../../../
+:imagesdir: ../../..
 :experimental:
 ifdef::env-github,env-browser[:outfilesuffix: .adoc]
 

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

@@ -1,7 +1,7 @@
 = Exporting Models as GlTF meshes from Blender
 :revnumber: 2.0
 :relfileprefix: ../../../
-:imagesdir: ../..
+:imagesdir: ../../..
 ifdef::env-github,env-browser[:outfilesuffix: .adoc]
 
 This section discusses how to export scenes from Blender (2.8+) in glTF format appropriate for use by `AssetManager.loadModel`.

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

@@ -2,6 +2,7 @@
 :author: mitm
 :revnumber: 1.0
 :relfileprefix: ../../../
+:imagesdir: ../../..
 :experimental:
 ifdef::env-github,env-browser[:outfilesuffix: .adoc]