Showing doc tree in the top level page o config, advanced and testing

Change-Id: I2d090ecf4a916f19721bea17644f6198abbc7907
diff --git a/configuration/component.rst b/configuration/component.rst
index b49f0cc..88349b3 100644
--- a/configuration/component.rst
+++ b/configuration/component.rst
@@ -8,6 +8,9 @@
 
 Enable/Disable Phased Recovery
 ------------------------------
+Phased recovery is an experimental feature that ensure a
+recovering switch are programmed before pointing traffic from other switches towards it.
+
 To check current status:
 
 .. code-block:: console