i18n: rename Korean translation from country to lang code #404

exampleSite/content/basics/migration/_index.en.md

@@ -14,6 +14,14 @@ This document shows you what's new in the latest release. For a detailed list of
 
 ---
 
+## 5.7.0
+
+- **Change**: The Korean language translation for this theme is now available with the language code `ko`. Formerly the country code `kr` was used instead.
+
+- **New**: The search now supports the Korean language.
+
+---
+
 ## 5.6.0
 
 - **New**: This release introduces an additional dedicated search page. On this page, displayed search results have more space making it easier scanning thru large number of results.

exampleSite/content/cont/i18n/_index.en.md

@@ -62,7 +62,6 @@ Although the theme supports a wide variety of supported languages, the site's se
 You'll see error reports in your browsers console log for each unsupported language. Currently unsupported are:
 
 - Indonesian
-- Korean
 - Polish
 {{% /notice %}}