Update physics.adoc

Fixed important Admonition to reflect bulletAppState.setDebugEnabled(true); is used for newer versions.

src/docs/asciidoc/jme3/advanced/physics.adoc

@@ -217,9 +217,15 @@ Pick the simplest and most applicable shape for the mesh for what you want to do
 
 [source,java]
 ----
+// JME sdk 3.0.10  and earlier
 bulletAppState.getPhysicsSpace().enableDebug(assetManager);
 ----
-
+or
+[source,java]
+----
+// newer versions
+bulletAppState.setDebugEnabled(true);
+----
 
 ====