[release-notes/gnome-3-18] add missing entry for the calendar screenshot to the makefile

[Andreas Nilsson <andreasn src gnome org>]

commit 800e13c8d6ea9461032151df27bb1ddcdad8f9b9
Author: Andreas Nilsson <anilsson redhat com>
Date:   Thu Sep 17 11:50:20 2015 +0200

    add missing entry for the calendar screenshot to the makefile

 help/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/help/Makefile.am b/help/Makefile.am
index d6823e4..32a8980 100644
--- a/help/Makefile.am
+++ b/help/Makefile.am
@@ -12,6 +12,7 @@ HELP_FILES = \
 HELP_MEDIA = \
  figures/boxes.png \
  figures/builder.png \
+ figures/calendar.png \
  figures/characters.png \
  figures/files.png \
  figures/firmware-updates.png \