[gnome-games] platform-list-item: Stop using margin-left/right

[Alexander Mikhaylenko <alexm src gnome org>]

commit a486ca5f379b14c433299d056ee40c4fe96e66d5
Author: Alexander Mikhaylenko <exalm7659 gmail com>
Date:   Mon Aug 19 22:56:30 2019 +0500

    platform-list-item: Stop using margin-left/right
    
    They are removed in GTK4, use margin-start/end instead.

 data/ui/platform-list-item.ui | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/data/ui/platform-list-item.ui b/data/ui/platform-list-item.ui
index fbe02486..1e97855d 100644
--- a/data/ui/platform-list-item.ui
+++ b/data/ui/platform-list-item.ui
@@ -6,8 +6,8 @@
     <child>
       <object class="GtkLabel" id="label">
         <property name="visible">true</property>
-        <property name="margin-left">6</property>
-        <property name="margin-right">6</property>
+        <property name="margin-start">6</property>
+        <property name="margin-end">6</property>
         <property name="margin-top">10</property>
         <property name="margin-bottom">10</property>
         <property name="wrap">true</property>