[code][model] Fix language full name retrieval

beat/web/code/models.py

@@ -483,7 +483,8 @@ class Code(StoredContribution):
     def language_fullname(self):
         if self.language in Code.CODE_NAMES:
             return Code.CODE_NAMES[self.language]
-        return [language for language in Code.CODE_LANGUAGE if language == self.language][0][1]
+
+        return [language for language in Code.CODE_LANGUAGE if language[0] == self.language][0][1]
 
 
     def json_language(self):