chore: update language name in settings for korean (libre-tube#7236)

Fix awkward expression for language array (Korean)

Author: bermount

app/src/main/res/values/array.xml

@@ -59,7 +59,7 @@
         <item>Bahasa Indonesia</item>
         <item>Italiano</item>
         <item>日本語</item>
-        <item>조선말</item>
+        <item>한국어</item>
         <item>latviešu</item>
         <item>മലയാളം</item>
         <item>मराठी</item>