[gnome-bluetooth] settings-widget: Adjust spacing of the properties dialog

[Bastien Nocera <hadess src gnome org>]

commit 36ea134d3daf073e843877adeba9cfacc4db7897
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Thu Oct 28 11:31:03 2021 -0300

    settings-widget: Adjust spacing of the properties dialog
    
    Add 18px of spacing in the 'properties_vbox' GtkBox, so that the
    buttons at the bottom and the labels at the center have some visual
    separation.

 lib/settings.ui | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/lib/settings.ui b/lib/settings.ui
index 89553efa..cd94a482 100644
--- a/lib/settings.ui
+++ b/lib/settings.ui
@@ -5,6 +5,7 @@
     <property name="margin_end">12</property>
     <property name="margin_top">12</property>
     <property name="margin_bottom">12</property>
+    <property name="spacing">18</property>
     <property name="orientation">vertical</property>
     <child>
       <object class="GtkBox" id="box1">