fix links

docs/modules/ROOT/pages/jme3/advanced/nifty_gui_xml_layout.adoc

@@ -196,7 +196,7 @@ See also link:https://github.com/nifty-gui/nifty-gui/raw/1.4/nifty-core/manual/n
 === Add Images
 
 The
-link:https://github.com/jMonkeyEngine/wiki/blob/master/src/docs/images/jme3/advanced/start-background.png[start-background.png] image is a fullscreen background picture. Add it to `Interface`. In the `start` screen, add the following image element:
+link:https://github.com/jMonkeyEngine/wiki/blob/master/docs/modules/ROOT/images/jme3/advanced/start-background.png[start-background.png] image is a fullscreen background picture. Add it to `Interface`. In the `start` screen, add the following image element:
 
 [source,xml]
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@@ -208,7 +208,7 @@ link:https://github.com/jMonkeyEngine/wiki/blob/master/src/docs/images/jme3/adva
 
 ----
 
-The link:https://github.com/jMonkeyEngine/wiki/blob/master/src/docs/images/jme3/advanced/hud-frame.png[hud-frame.png] image is a transparent frame that we use as HUD decoration. Add it to `Interface`. In the `hud` screen, add the following image element:
+The link:https://github.com/jMonkeyEngine/wiki/blob/master/docs/modules/ROOT/images/jme3/advanced/hud-frame.png[hud-frame.png] image is a transparent frame that we use as HUD decoration. Add it to `Interface`. In the `hud` screen, add the following image element:
 
 [source,xml]
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@@ -233,7 +233,7 @@ In order to make the hud-frame.png independent of the screen resolution you are
 
 ----
 
-The link:https://github.com/jMonkeyEngine/wiki/blob/master/src/docs/images/jme3/advanced/face1.png[face1.png] image is an image that you want to use as a status icon. Add it to `Interface`.
+The link:https://github.com/jMonkeyEngine/wiki/blob/master/docs/modules/ROOT/images/jme3/advanced/face1.png[face1.png] image is an image that you want to use as a status icon. Add it to `Interface`.
 In the `hud` screen's `foreground` layer, add the following image element:
 
 [source,xml]