Update the_scene_graph.adoc

Fixed broken new line.

src/docs/asciidoc/jme3/the_scene_graph.adoc

@@ -34,7 +34,8 @@ The coordinate system consists of:
 **  The Z axis starts away from you, and goes towards you.
 
 
-Every point in 3D space is uniquely defined by its X,Y,Z coordinates. The three numeric coordinates express how many “steps from each of the three axes a point is. The data type for all vectors in jME3 is `com.jme3.math.Vector3f`. All vectors are relative to the described coordinate system.  +Example: The point `new Vector3f(3,-5,1)` is 3 steps to the right, 5 steps down, and 1 towards you.
+Every point in 3D space is uniquely defined by its X,Y,Z coordinates. The three numeric coordinates express how many “steps from each of the three axes a point is. The data type for all vectors in jME3 is `com.jme3.math.Vector3f`. All vectors are relative to the described coordinate system. +
+Example: The point `new Vector3f(3,-5,1)` is 3 steps to the right, 5 steps down, and 1 towards you.
 
 
 [NOTE]