Correct Korean ISO 639-1 code.

README.md

@@ -10,7 +10,7 @@ A Minimalist Text Adventure Game
   [French](http://adarkroom.doublespeakgames.com/?lang=fr)      |
   [German](http://adarkroom.doublespeakgames.com/?lang=de)      |
   [Italian](http://adarkroom.doublespeakgames.com/?lang=it)     |
-  [Korean](http://adarkroom.doublespeakgames.com/?lang=kr)      |
+  [Korean](http://adarkroom.doublespeakgames.com/?lang=ko)      |
   [Polish](http://adarkroom.doublespeakgames.com/?lang=pl)      |
   [Russian](http://adarkroom.doublespeakgames.com/?lang=ru)     |
   [Spanish](http://adarkroom.doublespeakgames.com/?lang=es)     |

lang/langs.js

@@ -4,7 +4,7 @@ var langs = {
 	'es':'español',
 	'fr':'français',
 	'it':'italiano',
-	'kr':'한국어',
+	'ko':'한국어',
 	'pl':'polski',
 	'ru':'русский',
 	'sv':'svenska',