[gnome-music] Better attempt to add a translator comment

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 9c694b8d93728d06132518b951adf80e3ab2d92b
Author: Michael Catanzaro <mcatanzaro igalia com>
Date:   Fri Jan 8 09:29:24 2016 -0600

    Better attempt to add a translator comment
    
    https://bugzilla.gnome.org/show_bug.cgi?id=759217

 data/PlayerToolbar.ui |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/data/PlayerToolbar.ui b/data/PlayerToolbar.ui
index ffd3d43..142baf0 100644
--- a/data/PlayerToolbar.ui
+++ b/data/PlayerToolbar.ui
@@ -18,7 +18,7 @@
       <attribute name="target">song</attribute>
     </item>
     <item>
-      <attribute name="label" translatable="yes">Shuffle/Repeat Off</attribute>
+      <attribute name="label" translatable="yes" comments="Causes tracks to play in random 
order">Shuffle/Repeat Off</attribute>
       <attribute name="action">win.repeat</attribute>
       <attribute name="target">none</attribute>
     </item>