Updated GPGS reference

docs/en/en.json

@@ -633,7 +633,7 @@
                         "name": "Facebook Instant Games"
                     },
                     {
-                        "path": "/manuals/gpgs",
+                        "path": "/extension-gpgs",
                         "name": "Google Play Game Services"
                     },
                     {

docs/en/manuals/gpgs.md

@@ -3,19 +3,4 @@ title: Google Play Game Services in Defold
 brief: This document describes how to set up and use Google Play Game Services
 ---
 
-# Google Play Game Services
-
-[Google Play Game Services](https://developers.google.com/games/services) adds user authentication, cloud save, achievements, leaderboards and more to your Android game. Google Play Game Services is available as a [native extension](/manuals/extensions/).
-
-## Installing the extension
-
-To start using the Google Play Game Services extension you need to add it as a dependency to your `game.project` file. The latest stable version is available with the dependency URL:
-```
-https://github.com/defold/extension-gpgs/archive/master.zip
-```
-
-We recommend using a link to a zip file of a [specific release](https://github.com/defold/extension-gpgs/releases).
-
-## Using the extension
-
-Usage instructions and API reference is available on the [extension GitHub page](https://defold.github.io/extension-gpgs/).
+[This manual has been move](/extension-gpgs)