[release-notes/gnome-3-24] Added screenshot for Night Light

[Andreas Nilsson <andreasn src gnome org>]

commit 2c8e3c07869adbe578f538a30bc20c8e103a8cc6
Author: Andreas Nilsson <anilsson redhat com>
Date:   Fri Mar 10 17:10:42 2017 +0100

    Added screenshot for Night Light

 help/C/figures/night-light.png |  Bin 0 -> 162044 bytes
 help/C/index.page              |    2 +-
 2 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/help/C/figures/night-light.png b/help/C/figures/night-light.png
new file mode 100644
index 0000000..8427960
Binary files /dev/null and b/help/C/figures/night-light.png differ
diff --git a/help/C/index.page b/help/C/index.page
index c0a8558..f216479 100644
--- a/help/C/index.page
+++ b/help/C/index.page
@@ -40,7 +40,7 @@
 
   <section id="night-light">
     <title>Sleep Easier with Night Light</title>
-    <media type="image" src="figures/placeholder.png"/>
+    <media type="image" src="figures/night-light.png"/>
     <p>Night Light is a new feature that changes the color of your displays 
     according to the time of day. By making the screen warmer in the evening, 
     it can help to prevent sleeplessness and eye strain.</p>