Update hello_material.adoc

Removed duplication or word common from Default Material Definitions table to space things out some.

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

@@ -315,13 +315,13 @@ a| Default Definition
 a| Usage 
 <a| Parameters  
 
-a| `Common/MatDefs/Misc/Unshaded.j3md` 
+a| `MatDefs/Misc/Unshaded.j3md` 
 a| Colored: Use with mat.setColor() and ColorRGBA. +
 Textured: Use with mat.setTexture() and Texture. 
 a| Color : Color +
 ColorMap : Texture2D 
 
-<a| `Common/MatDefs/Light/Lighting.j3md`      
+<a| `MatDefs/Light/Lighting.j3md`      
 a| Use with shiny Textures, Bump- and NormalMaps textures. +
 Requires a light source. 
 a| Ambient, Diffuse, Specular : Color +