fixing log

Author: mrm9084

featuremanagement/_featuremanagerbase.py

@@ -243,9 +243,7 @@ def _build_targeting_context(self, args: Tuple[Any]) -> TargetingContext:
             if targeting_context and isinstance(targeting_context, TargetingContext):
                 return targeting_context
             logging.warning(
-                "targeting_context_accessor did not return a TargetingContex. Received type {}.".format(
-                    type(targeting_context)
-                )
+                f"targeting_context_accessor did not return a TargetingContext. Received type {type(targeting_context)}."
             )
         return TargetingContext()