[recipes] Mark a string for translation

[Piotr Drąg <piotrdrag src gnome org>]

commit 075a5fd4c67c5ae2ec92e026a9b8798b7cd6095c
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sat Jul 15 03:35:28 2017 +0200

    Mark a string for translation

 src/recipe-surprise.ui |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/recipe-surprise.ui b/src/recipe-surprise.ui
index 70a2d66..104d292 100644
--- a/src/recipe-surprise.ui
+++ b/src/recipe-surprise.ui
@@ -11,7 +11,7 @@
     <child type="titlebar">
       <object class="GtkHeaderBar">
         <property name="visible">0</property>
-        <property name="title">Welcome</property>
+        <property name="title" translatable="yes">Welcome</property>
         <property name="show-close-button">0</property>
       </object>
     </child>