Fix the talkback problem of the "Verified link info" icon

- Add the description to the contentDescription attribute.

Fixes: 183808786
Test: manual test
Change-Id: Icca45f2f7bf93c4a949095e810b97b6cff6b7558

res/layout/verified_links_widget.xml

@@ -18,6 +18,7 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="wrap_content"
     android:layout_height="match_parent"
+    android:contentDescription="@string/app_launch_verified_links_info_description"
     android:orientation="horizontal">
 
     <include layout="@layout/preference_widget_info"