[gnome-software] gs-update-dialog.ui: Add left and right margin to os_update_box

[Kalev Lember <klember src gnome org>]

commit 998b9b061c6b8062db5476764b4dc2004c5d3f7b
Author: Felix Häcker <haecker felix1207 gmail com>
Date:   Sat Mar 3 15:48:47 2018 +0100

    gs-update-dialog.ui: Add left and right margin to os_update_box
    
    The current os_update_box looks a bit weird, because the left and right
    margin is missing.
    
    I've added a 18px left&right margin. Now it looks better.
    
    https://gitlab.gnome.org/GNOME/gnome-software/issues/317

 src/gs-update-dialog.ui | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/gs-update-dialog.ui b/src/gs-update-dialog.ui
index 8095086f..2440aefe 100644
--- a/src/gs-update-dialog.ui
+++ b/src/gs-update-dialog.ui
@@ -260,6 +260,8 @@
                     <property name="visible">True</property>
                     <property name="orientation">vertical</property>
                     <property name="margin_bottom">18</property>
+                    <property name="margin_start">18</property>
+                    <property name="margin_end">18</property>
                   </object>
                 </child>
               </object>