Add description for display options preference

Bug: 16153186
Change-Id: Iaeaa0f10d3ce826bb409c3469a94f5909bf5052a
diff --git a/res-common/values/strings.xml b/res-common/values/strings.xml
index a72db64..ca54b30 100644
--- a/res-common/values/strings.xml
+++ b/res-common/values/strings.xml
@@ -739,4 +739,9 @@
     <!-- The title of the preference section that allows users to configure how they want their
          contacts to be displayed. [CHAR LIMIT=128] -->
     <string name="preference_display_options">Contact display options</string>
+
+    <!-- Detailed description of the preference section that allows users to configure how they
+         want their contacts to be displayed. [CHAR LIMIT=128] -->
+    <string name="preference_display_options_description">Configure how your contacts are displayed and sorted.</string>
+
 </resources>