[gnome-control-center] Add translator comment

[Alexandre Franke <afranke src gnome org>]

commit 9db096e6e6cdb1a9f37e7ac97e3844a68c6ff3f7
Author: Alexandre Franke <alexandre franke gmail com>
Date:   Sun Aug 27 14:19:50 2017 +0200

    Add translator comment

 panels/printers/printer-entry.ui |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/panels/printers/printer-entry.ui b/panels/printers/printer-entry.ui
index 74317cc..7054be0 100644
--- a/panels/printers/printer-entry.ui
+++ b/panels/printers/printer-entry.ui
@@ -35,7 +35,7 @@
           <object class="GtkCheckButton" id="printer_default_checkbutton">
             <property name="visible">True</property>
             <property name="valign">center</property>
-            <property name="label" translatable="yes">Use Printer by Default</property>
+            <property name="label" translatable="yes" comments="Set this printer as default">Use Printer by 
Default</property>
             <signal name="toggled" handler="set_as_default_printer"/>
           </object>
           <packing>