Add upgrade-to-buster to index

diff --git a/input/index.mdwn b/input/index.mdwn
index 551a433..c5f2624 100644 (file)
--- a/input/index.mdwn
+++ b/input/index.mdwn
@@ -46,6 +46,7 @@ ticket.
 * [[howto/upgrade-to-wheezy]]
 * [[howto/upgrade-to-jessie]]
 * [[howto/upgrade-to-stretch]]
+* [[howto/upgrade-to-buster]]
 * [[howto/install-ganeti]]: ganeti related documentation
 * [[howto/ilo-https]]
 * [[howto/backup]]