add links to new topics

docs/modules/ROOT/pages/jme3.adoc

@@ -7,19 +7,8 @@
 ifdef::env-github,env-browser[:outfilesuffix: .adoc]
 
 
-=== Post-Processor Filters and Effects
 
 
-=== Landscapes
-
-*  <<jme3/advanced/sky#,Sky>>
-*  <<jme3/advanced/terrain#,Terrain (TerraMonkey)>>
-*  <<jme3/advanced/endless_terraingrid#,Endless Terrain (TerrainGrid)>>
-*  <<jme3/advanced/terrain_collision#,Terrain Collision>>
-*  <<jme3/advanced/water#,Simple Water>>
-*  <<jme3/advanced/post-processor_water#,Post-Processor Water (SeaMonkey)>>
-*  <<jme3/contributions/vegetationsystem#,Vegetation System>>
-
 === Artificial Intelligence (AI)
 
 *  <<jme3/advanced/recast#,Recast Navigation>>
@@ -93,6 +82,7 @@ ifdef::env-github,env-browser[:outfilesuffix: .adoc]
 
 === jMonkey User Contributions
 
+*  <<jme3/contributions/vegetationsystem#,Vegetation System>>
 *  <<jme3/contributions#, Contributions - User made utilities to add functionality to the engine.>>
 
 === Sample Projects

docs/modules/core/nav.adoc

@@ -45,3 +45,9 @@
 *** xref:effect/effects_overview.adoc[Overview]
 *** xref:effect/bloom_and_glow.adoc[Bloom and Glow]
 *** xref:effect/particle_emitters.adoc[Particle Emitters]
+** Landscapes
+*** xref:util/sky.adoc[Sky]
+*** xref:terrain/terrain.adoc[Terrain (TerraMonkey)]
+*** xref:collision/terrain_collision.adoc[Terrain Collision]
+*** xref:effect/water.adoc[Simple Water]
+*** xref:effect/post-processor_water.adoc[Post-Processor Water (SeaMonkey)]