Fixing a typo from <array> to <string-array>

Change-Id: Iadbbe59e0ba93a21373056fe6b4af9db7ce39f66
diff --git a/res/values/config.xml b/res/values/config.xml
index 47311f3..c8a610d 100644
--- a/res/values/config.xml
+++ b/res/values/config.xml
@@ -73,7 +73,7 @@
 
     <!-- Name of a packages that com.android.launcher3.action.LAUNCH
          should be targeting. Can be empty. -->
-    <array name="launch_broadcast_targets" translatable="false"></array>
+    <string-array name="launch_broadcast_targets" translatable="false"></string-array>
 
     <!-- View ID to use for QSB widget -->
     <item type="id" name="qsb_widget" />