Update material_editing.adoc

Fixed typo in image width.

src/docs/asciidoc/sdk/material_editing.adoc

@@ -20,7 +20,7 @@ The jMonkeyEngine uses a special Material format, which comes in .j3m files. You
 == Creating .j3m Materials
 
 
-image::sdk/material-editor.png[material-editor.png,with="275",height="245",align="right"]
+image::sdk/material-editor.png[material-editor.png,width="275",height="245",align="right"]
 
 
 To create new .j3m files in the jMonkeyEngine SDK,
@@ -62,7 +62,7 @@ You can modify the source code of the j3m file in the “source tab of the Mater
 == Using .j3m Materials
 
 
-image::sdk/applymaterial.jpg[applymaterial.jpg,with="180",height="300",align="right"]
+image::sdk/applymaterial.jpg[applymaterial.jpg,width="180",height="300",align="right"]
 
 
 When the material is ready and saved into your projects assets directory, you can assign the .j3m to a Geometry.