fix header attr

docs/modules/sdk/pages/filters.adoc

@@ -1,11 +1,7 @@
 = jMonkeyEngine SDK: Post-Processor Filters
-:author: 
-:revnumber: 
-:revdate: 2016/03/17 20:48
+:revnumber: 2.0
+:revdate: 2020/07/10
 :keywords: documentation, sdk, effect, file
-:relfileprefix: ../
-:imagesdir: ..
-ifdef::env-github,env-browser[:outfilesuffix: .adoc]
 
 
 Filters are used for scene-wide effects such as glow, fog, blur. The SDK lets you create a file storing combinations of filters. You can preview the filter settings on a loaded scene in the SDK. You can load them into your application (add them to the viewPort) to activate your preconfigured set of several filters in one step.
@@ -20,9 +16,9 @@ To create a new filter:
 
 .  In the Projects window, right-click Assets→Effects.
 .  Select File→New File…
-.  Select Filter→Empty FilterPostProcessor File in the New File Wizard. 
+.  Select Filter→Empty FilterPostProcessor File in the New File Wizard.
 **  An empty filter file appears in the Assets→Effects directory.
-.  Double-click the created file. 
+.  Double-click the created file.
 **  The file opens in the FilterExplorer window.
 
 
@@ -31,7 +27,7 @@ To create a new filter:
 To add filters or modify existing filters
 
 .  Double-click a j3f file to open it in the FilterExplorer window.
-.  Right-click the j3f file's root node to add a filter. 
+.  Right-click the j3f file's root node to add a filter.
 **  Added filters are listed under the filter's root node.
 .  Open the Properties window and select a filter in the FilterExplorer. Configure filter options like intensity etc.
 
@@ -46,9 +42,9 @@ image::sdk/p3wuv.png[p3wuv.png,width="",height=""]
 
 To see a loaded filter
 
-.  Open a model or scene in the SceneComposer. 
+.  Open a model or scene in the SceneComposer.
 .  Double-click a j3f file to open it in the FilterExplorer window.
-.  Press the “show filter button in the OpenGL window.
+.  Press the "`show filter`" button in the OpenGL window.
 
 
 == Loading filters in a game