Fix broken link

src/docs/asciidoc/jme3/beginner/hello_collision.adoc

@@ -287,7 +287,7 @@ For the scene, you load the `sceneModel` from a zip file, and adjust the size.
 
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-The file `town.zip` is included as a sample model in the JME3 sources – you can link:http://jmonkeyengine.googlecode.com/svn/trunk/engine/town.zip[download it here]. (Optionally, use any OgreXML scene of your own.) For this sample, place the zip file in the application's top level directory (that is, next to src/, assets/, build.xml).
+The file `town.zip` is included as a sample model in the JME3 sources – you can link:https://github.com/jMonkeyEngine/wiki/raw/master/src/docs/resources/Scenes/Town/town.zip[download it here]. (Optionally, use any OgreXML scene of your own.) For this sample, place the zip file in the application's top level directory (that is, next to src/, assets/, build.xml).
 
 [source,java]
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