[Docs] Clone and build wiki pages on docs.platypush.tech.

docs/source/index.rst

@@ -7,17 +7,24 @@ For more information on Platypush check out:
 
 * The `main page`_ of the project
 * The `Gitea page`_ of the project
-* The `online wiki`_ for quickstart and examples
 * The `Blog articles`_ for inspiration on use-cases possible projects
 
 .. _main page: https://platypush.tech
 .. _Gitea page: https://git.platypush.tech/platypush/platypush
-.. _online wiki: https://git.platypush.tech/platypush/platypush/wiki
 .. _Blog articles: https://blog.platypush.tech
 
+.. toctree::
+    :maxdepth: 3
+    :caption: Wiki:
+
+    wiki/index
+    wiki/Installation
+    wiki/Configuration
+    wiki/Installing-extensions
+
 .. toctree::
     :maxdepth: 2
-    :caption: Contents:
+    :caption: Reference:
 
     backends
     plugins