add new argument to doc string

Author: jonvet

fastapi_mcp/openapi/utils.py

@@ -27,6 +27,7 @@ def resolve_schema_references(
     Args:
         schema_part: The part of the schema being processed that may contain references
         reference_schema: The complete schema used to resolve references from
+        seen: A set of already seen references to avoid infinite recursion
 
     Returns:
         The schema with references resolved