Update description for wallpaper accessibility announcement string

BUG: 11168576
Change-Id: I0911a0413eba9215411e378477e059c1fa15d986
diff --git a/res/values/strings.xml b/res/values/strings.xml
index d26a73b..cafa424 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -41,7 +41,7 @@
     <!-- Accessibility string used as a label for a particular wallpaper in the Wallpaper Picker list.
          e.g. "Wallpaper 3 of 10" -->
     <string name="wallpaper_accessibility_name">Wallpaper %1$d of %2$d</string>
-    <!-- Accessibility string used to announce that an item has been selected. -->
+    <!-- Accessibility string used to announce that a wallpaper has been selected. -->
     <string name="announce_selection">Selected <xliff:g id="label" example="Wallpaper 3 of 10">%1$s</xliff:g></string>
 
     <!-- Label on button to delete wallpaper(s) -->