Aperture: Reformat root_preferences.xml

Change-Id: Iac12ae306deb11bbdc758beedb2fb39536f49750
diff --git a/app/src/main/res/xml/root_preferences.xml b/app/src/main/res/xml/root_preferences.xml
index 1d438f4..e10ef70 100644
--- a/app/src/main/res/xml/root_preferences.xml
+++ b/app/src/main/res/xml/root_preferences.xml
@@ -20,8 +20,8 @@
             app:defaultValue="true"
             app:iconSpaceReserved="false"
             app:key="shutter_sound"
-            app:title="@string/shutter_sound_title"
-            app:summary="@string/shutter_sound_summary" />
+            app:summary="@string/shutter_sound_summary"
+            app:title="@string/shutter_sound_title" />
 
     </PreferenceCategory>