fix formatting

Author: liu-rebecca

tableauserverclient/server/request_factory.py

@@ -972,9 +972,9 @@ def update_req(self, workbook_item):
             if data_freshness_policy_config.option == "FreshEvery":
                 if data_freshness_policy_config.fresh_every_schedule is not None:
                     fresh_every_element = ET.SubElement(data_freshness_policy_element, "freshEverySchedule")
-                    fresh_every_element.attrib["frequency"] = (
-                        data_freshness_policy_config.fresh_every_schedule.frequency
-                    )
+                    fresh_every_element.attrib[
+                        "frequency"
+                    ] = data_freshness_policy_config.fresh_every_schedule.frequency
                     fresh_every_element.attrib["value"] = str(data_freshness_policy_config.fresh_every_schedule.value)
                 else:
                     raise ValueError(f"data_freshness_policy_config.fresh_every_schedule must be populated.")