[geary] Mark another string as translatable

[Yosef Or Boczko <yoseforb src gnome org>]

commit 244c197c15cbde604044340b47732896e0050690
Author: Yosef Or Boczko <yoseforb src gnome org>
Date:   Wed Mar 11 02:35:07 2015 +0200

    Mark another string as translatable

 ui/preferences.glade |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/ui/preferences.glade b/ui/preferences.glade
index 93232ae..9b11e7d 100644
--- a/ui/preferences.glade
+++ b/ui/preferences.glade
@@ -231,7 +231,7 @@
       <object class="GtkHeaderBar" id="headerbar">
         <property name="visible">True</property>
         <property name="can_focus">False</property>
-        <property name="title">Preferences</property>
+        <property name="title" translatable="yes">Preferences</property>
         <property name="show_close_button">True</property>
       </object>
     </child>