fix link

docs/modules/tutorials/pages/intermediate/faq.adoc

@@ -688,7 +688,7 @@ Use AudioRenderer, Listener, and AudioNode from com.jme3.audio..
 
 *Learn more:*
 
-* xref:ROOT:jme3/beginner/hello_audio.adoc[Hello Audio]
+* xref:beginner/hello_audio.adoc[Hello Audio]
 * xref:ROOT:jme3/advanced/audio.adoc[Audio]
 
 *Code sample:*