fix image

docs/modules/tutorials/pages/beginner/what_s_an_ide.adoc

@@ -88,7 +88,7 @@ The jMonkeyEngine SDK is the same as NetBeans IDE, plus
 *  And more…
 
 
-image::jmonkeyplatform-docu-1.png[jmonkeyplatform-docu-1.png,width="",height="",align="center"]
+image::sdk:jmonkeyplatform-docu-1.png[jmonkeyplatform-docu-1.png,width="",height="",align="center"]
 
 
 You see how such a unique IDE can speed up your development process drastically, it's worth giving it a try!