fix header macros

docs/modules/sdk/pages/android.adoc

@@ -1,11 +1,7 @@
 = Android Support in the jMonkeyEngine
-:author:
-:revnumber:
-:revdate: 2016/03/17 20:48
+:revnumber: 2.0
+:revdate: 2020/07/10
 :keywords: documentation, sdk, android, deployment, tool
-:relfileprefix: ../
-:imagesdir: ..
-ifdef::env-github,env-browser[:outfilesuffix: .adoc]
 
 
 jMonkeyEngine supports android deployment, and it's fully integrated in the SDK.
@@ -17,14 +13,14 @@ The android support is in constant enhancement so if you have questions or sugge
 
 === Developer Requirements
 
-*  Install <<documentation#,jMonkeyEngine SDK>> (Remember to install link:http://www.oracle.com/technetwork/java/javase/downloads/index.html[JDK])
+*  Install xref:sdk.adoc[jMonkeyEngine SDK] (Remember to install link:http://www.oracle.com/technetwork/java/javase/downloads/index.html[JDK])
 *  Install link:http://developer.android.com/sdk/index.html[Android SDK Manager 22.6.2] or newer.
 ..  (You don't need the ADT Bundle for Windows. Choose “USE AN EXISTING IDE and download the SDK Tools)
 ..  It's recommended to choose another destination folder.
 ..  Start the SDK Manager and install the default selected 13 packages (accept licenses)
 
 
-image:jme3/android_sdk_manager.png[android_sdk_manager.png,width="",height=""]
+image:android_sdk_manager.png[android_sdk_manager.png,width="",height=""]
 
 *  (Optional) Install NBAndroid in the jMonkeyEngine SDK:
 ..  Go to Tools→Plugins→Available Plugins.