make section title consistent

diff --git a/meetings/hd2015.mdwn b/meetings/hd2015.mdwn
index add26ca530ec526242755a490d59b97a9bad8d71..3511e5525bee9072526ab61b1e91cc1869dd1b61 100644 (file)
--- a/meetings/hd2015.mdwn
+++ b/meetings/hd2015.mdwn
@@ -46,7 +46,8 @@ Security and privacy concerns
 * reproducible builds:
   [sphinx man pages](https://reproducible.debian.net/rb-pkg/testing/amd64/notmuch.html)
 
-### usability as security?
+Usability as security?
+----------------------
 
 * indexing encrypted mail
 * Memory Hole protected headers