formating for python 3.10

Author: davidsbatista

integrations/valkey/src/haystack_integrations/document_stores/valkey/document_store.py

@@ -1417,10 +1417,7 @@ def _validate_metadata_field_names(self, metadata_fields: list[str]) -> None:
             normalized = ValkeyDocumentStore._normalize_metadata_field_name(name)
             if normalized not in self._metadata_fields:
                 configured = [ValkeyDocumentStore._metadata_field_to_doc_meta_key(f) for f in self._metadata_fields]
-                msg = (
-                    f"Metadata field '{name}' is not configured for filtering. "
-                    f"Configured fields: {configured}."
-                )
+                msg = f"Metadata field '{name}' is not configured for filtering. Configured fields: {configured}."
                 raise ValueError(msg)
 
     def _validate_numeric_metadata_field(self, metadata_field: str) -> None: