Rename keyboard XML files

* Slavic to East Slavic
* Serbian to South Slavic
* Scandinavian to Nordic

Bug: 6150183
Change-Id: I8f5641aa07b83cbb225f5fd73e351a6f8abe0784
diff --git a/java/res/xml-nb/keyboard_set.xml b/java/res/xml-nb/keyboard_set.xml
index d146beb..2d585a9 100644
--- a/java/res/xml-nb/keyboard_set.xml
+++ b/java/res/xml-nb/keyboard_set.xml
@@ -23,7 +23,7 @@
     latin:keyboardLocale="nb">
     <Element
         latin:elementName="alphabet"
-        latin:elementKeyboard="@xml/kbd_scandinavian" />
+        latin:elementKeyboard="@xml/kbd_nordic" />
     <Element
         latin:elementName="symbols"
         latin:elementKeyboard="@xml/kbd_symbols" />