Fix language selection settings

Change-Id: I84e51ce2b80a21650e309e5e6c9ee5f1739170c9
diff --git a/java/res/xml-de/kbd_qwerty.xml b/java/res/xml-de/kbd_qwerty.xml
index 6b5c223..e656966 100644
--- a/java/res/xml-de/kbd_qwerty.xml
+++ b/java/res/xml-de/kbd_qwerty.xml
@@ -28,7 +28,7 @@
     latin:verticalGap="@dimen/key_bottom_gap"
     latin:popupKeyboardTemplate="@xml/kbd_popup_template"
     latin:maxPopupKeyboardColumn="@integer/config_max_popup_keyboard_column"
-    latin:keyboardLocale="de"
+    latin:keyboardLocale="de_DE"
 >
     <include
         latin:keyboardLayout="@xml/kbd_qwertz_rows" />