fix links

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

@@ -1,6 +1,6 @@
 = jMonkeyEngine 3.0 Feature Overview
-:revnumber: 2.1
-:revdate: 2020/07/23
+:revnumber: 2.2
+:revdate: 2020/07/24
 
 
 See also: xref:jme3/requirements.adoc[requirements].
@@ -78,7 +78,7 @@ a| xref:core:material/materials_overview.adoc[Materials Overview]
 l|.j3f
 a|A custom post-processor filter configuration. You can create a .j3f file to store a FilterPostProcessor with a set of preconfigured filters.
 a| xref:sdk:filters.adoc[Filters] +
-xref:jme3/advanced/effects_overview.adoc[Effects Overview]
+xref:core:effect/effects_overview.adoc[Effects Overview]
 
 |===
 
@@ -251,7 +251,7 @@ a|OGG Vorbis music and sounds
 == Special Effects
 
 *  xref:jme3/advanced/particle_emitters.adoc[Particles: Smoke, fire, explosions, etc]
-*  xref:jme3/advanced/effects_overview.adoc[Post processing / 2D Filter Effects]
+*  xref:core:effect/effects_overview.adoc[Post processing / 2D Filter Effects]
 **  Reflective Water
 **  Shadow mapping
 **  High Dynamic Range rendering

docs/modules/core/pages/app/simpleapplication.adoc

@@ -1,6 +1,6 @@
 = SimpleApplication
-:revnumber: 2.0
-:revdate: 2020/07/15
+:revnumber: 2.1
+:revdate: 2020/07/24
 :keywords: display, basegame, documentation, intro, intermediate, init, input, game, loop, rootnode, application, simpleapplication
 
 
@@ -61,7 +61,7 @@ a|Purpose
 
 a|viewPort +
 getViewPort()
-a|The view object for the default camera. You can register advanced xref:jme3/advanced/effects_overview.adoc[post-processor filters] here.
+a|The view object for the default camera. You can register advanced xref:effect/effects_overview.adoc[post-processor filters] here.
 
 a|settings +
 setSettings()

docs/modules/core/pages/effect/particle_emitters.adoc

@@ -1,6 +1,6 @@
 = Particle Emmitter Settings
-:revnumber: 2.1
-:revdate: 2020/07/22
+:revnumber: 2.2
+:revdate: 2020/07/24
 :keywords: documentation, effect
 :uri-jmonkeyengine: https://github.com/jMonkeyEngine/jmonkeyengine/tree/master/
 :uri-forum: https://hub.jmonkeyengine.org/
@@ -227,4 +227,4 @@ Browse the full source code of all link:https://github.com/jMonkeyEngine/jmonkey
 
 '''
 
-See also: xref:jme3/advanced/effects_overview.adoc[Effects Overview]
+See also: xref:effect/effects_overview.adoc[Effects Overview]

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

@@ -705,7 +705,7 @@ For swarm like effects you use particle emitters.
 * xref:beginner/hello_effects.adoc[Hello Effects]
 * xref:ROOT:jme3/advanced/particle_emitters.adoc[Particle Emitters]
 * xref:ROOT:jme3/advanced/bloom_and_glow.adoc[Bloom and Glow]
-* xref:ROOT:jme3/advanced/effects_overview.adoc[Effects Overview]
+* xref:core:effect/effects_overview.adoc[Effects Overview]
 * link:https://github.com/jMonkeyEngine/jmonkeyengine/blob/master/jme3-core/src/main/java/com/jme3/effect/shapes/EmitterSphereShape.java[com.jme3.effect.EmitterSphereShape.java]
 * link:https://github.com/jMonkeyEngine/jmonkeyengine/blob/master/jme3-core/src/main/java/com/jme3/effect/ParticleEmitter.java[com.jme3.effect.ParticleEmitter.java]
 
@@ -739,7 +739,7 @@ Use special post-processor renderers from com.jme3.post..
 
 *Learn more:*
 
-* xref:ROOT:jme3/advanced/effects_overview.adoc[Effects Overview]
+* xref:core:effect/effects_overview.adoc[Effects Overview]
 
 
 === How do I generate a terrain?

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

@@ -1,6 +1,6 @@
 = Introduction to Mathematical Functionality
-:revnumber: 2.0
-:revdate: 2020/07/13
+:revnumber: 2.1
+:revdate: 2020/07/24
 
 It's a fact of life, math is hard. Unfortunately, 3D graphics require a fair bit of knowledge about the subject. Fortunately, jME is able to hide the majority of the details away from the user. Vectors are the fundamental type in the 3D environment, and it is used extensively. Matrices are also a basic necessity of 3D for representing linear systems. xref:ROOT:jme3/quaternion.adoc[Quaternions] are perhaps the most powerful and complicated of the basic types and are used for rotation in jME.
 
@@ -720,7 +720,7 @@ Rectangle defines a finite plane within three dimensional space that is specifie
 
 === jME Usage
 
-Rectangle is a straight forward data class that simply maintains values that defines a Rectangle in 3D space. One interesting use is the `random` method that will create a random point on the Rectangle. The xref:ROOT:jme3/advanced/effects_overview.adoc[Particle System] makes use of this to define an area that generates xref:ROOT:jme3/advanced/particle_emitters.adoc[Particles].
+Rectangle is a straight forward data class that simply maintains values that defines a Rectangle in 3D space. One interesting use is the `random` method that will create a random point on the Rectangle. The xref:core:effect/effects_overview.adoc[Particle System] makes use of this to define an area that generates xref:ROOT:jme3/advanced/particle_emitters.adoc[Particles].
 
 
 === Example 1 : Define a Rectangle and Get a Point From It