Fix typo

src/calng/base_calcat.py

@@ -611,7 +611,7 @@ class BaseCalcatFriend:
         # TODO: warn user about all the things that go wrong
         def aux():
             with self.api_lock:
-                data = self.get_overriden_constant_version(constant)
+                data = self.get_overridden_constant_version(constant)
             callback(constant, data)
 
         thread = threading.Thread(target=aux)