[release-notes] Makefile.am: Add new screenshots

[Allan Day <allanday src gnome org>]

commit c81ea252931bca4a7691cc0b12e2109c83982a12
Author: Allan Day <allanpday gmail com>
Date:   Fri Sep 10 12:32:53 2021 +0100

    Makefile.am: Add new screenshots

 help/Makefile.am | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/help/Makefile.am b/help/Makefile.am
index e29c41a5..9b39e670 100644
--- a/help/Makefile.am
+++ b/help/Makefile.am
@@ -10,8 +10,10 @@ HELP_FILES = \
 
 HELP_MEDIA = \
  figures/connections.png \
+ figures/developer.png \
  figures/flatpak.png \
  figures/gtk.png \
+ figures/hig.png \
  figures/multitasking.png \
  figures/music.png \
  figures/placeholder.png \