Fix 'Unkown' typo

language_code.py

@@ -168,7 +168,7 @@ class LanguageCode(Enum):
         return self.name_en if in_english else self.name_native
     def __str__(self):
         if self.name_en is None:
-            return "Unkown"
+            return "Unknown"
         return self.name_en
     
     def __bool__(self):
@@ -188,4 +188,4 @@ class LanguageCode(Enum):
             # Normal comparison for LanguageCode instances
             return self.iso_639_1 == other.iso_639_1
         # Otherwise, defer to the default equality
-        return NotImplemented
+        return NotImplemented