[release-notes] Add new screenshots to Makefile

[Piotr Drąg <piotrdrag src gnome org>]

commit c6a6355e3c51af7b5b3e5514b39e50e06498dc7a
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sat Sep 5 09:21:56 2020 +0200

    Add new screenshots to Makefile

 help/Makefile.am | 9 +++++++++
 1 file changed, 9 insertions(+)
---
diff --git a/help/Makefile.am b/help/Makefile.am
index 606b78a2..60734e34 100644
--- a/help/Makefile.am
+++ b/help/Makefile.am
@@ -9,8 +9,17 @@ HELP_FILES = \
  i18n.page
 
 HELP_MEDIA = \
+ figures/boxes-xml.png \
+ figures/clocks.png \
+ figures/epiphany.png \
  figures/flatpak.png \
  figures/gtk.png \
+ figures/maps.png \
+ figures/screenshot-and-sound-recorder.png \
+ figures/screenshot.png \
+ figures/sound-recorder.png \
+ figures/welcome-to-gnome-os.png \
+ figures/welcome-tour.png \
  figures/placeholder.png
 
 HELP_LINGUAS = $(shell cat LINGUAS | sed '/^#/d')