[totem/mallard-documentation] Mark an image as non-translatable

[Andre Klapper <aklapper src gnome org>]

commit 3d1706a1b71081f4b9b89e73afc4ae2d4c84a612
Author: Andre Klapper <a9016009 gmx de>
Date:   Sat Jan 12 02:29:20 2019 +0100

    Mark an image as non-translatable

 help/C/sound-volume.page | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/help/C/sound-volume.page b/help/C/sound-volume.page
index 65c81497..af6f4615 100644
--- a/help/C/sound-volume.page
+++ b/help/C/sound-volume.page
@@ -44,7 +44,7 @@
 
   <figure>
     <title>Volume button and slider</title>
-    <media type="image" mime="image/png" src="figures/volume-button-slider.png">
+    <media type="image" mime="image/png" src="figures/volume-button-slider.png" its:translate="no">
     <p>Screenshot of the volume button and slider.</p>
     </media>
   </figure>