fix links

docs/modules/ROOT/pages/jme3/features.adoc

@@ -43,7 +43,7 @@ See also: xref:jme3/requirements.adoc[requirements].
 *  xref:physics/physics.adoc[Bullet physics binding]
 **  xref:physics:control/walking_character.adoc[Physical characters]
 **  xref:physics:joint/hinges_and_joints.adoc[Physical joints and hinges]
-**  xref:jme3/advanced/vehicles.adoc[Ray-cast vehicle]
+**  xref:physics:control/vehicles.adoc[Ray-cast vehicle]
 **  xref:jme3/advanced/ragdoll.adoc[Ragdoll physics]
 
 *  xref:jme3/advanced/bullet_multithreading.adoc[Multi-threaded physics]

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

@@ -581,7 +581,7 @@ Use a VehicleControl that supports suspension behavior.
 
 *Learn more:*
 
-* xref:ROOT:jme3/advanced/vehicles.adoc[Vehicles]
+* xref:physics:control/vehicles.adoc[Vehicles]
 * link:https://github.com/jMonkeyEngine/jmonkeyengine/tree/master/jme3-bullet/src/common/java/com/jme3/bullet/control/[com.jme3.bullet.control.VehicleControl]
 
 *Code Sample:*