Update optimization.adoc

Fixed broken new line.

src/docs/asciidoc/jme3/intermediate/optimization.adoc

@@ -18,7 +18,8 @@ The reason for this is that a render command must be done for every object, pote
 
 *Possible optimization techniques*
 
-*  Use GeometryBatchFactory.optimize(node) to merge the meshes of the geometries contained in the given node into fewer batches, each based on common Materials used. +You can optimize nodes using the SceneComposer in the SDK as well: Right-click a node and select “Optimize Geometry.
+*  Use GeometryBatchFactory.optimize(node) to merge the meshes of the geometries contained in the given node into fewer batches, each based on common Materials used. +
+You can optimize nodes using the SceneComposer in the SDK as well: Right-click a node and select “Optimize Geometry.
 
 *Side-effects*