Fix wrong usage of the python ironic client

Author: stevekeay

python/understack-workflows/understack_workflows/ironic/client.py

@@ -58,8 +58,8 @@ def set_node_target_raid_config(self, node_id: str, raid_config: dict) -> None:
     def get_node_traits(self, node_id: str) -> list[str]:
         return cast(list[str], self.client.node.get_traits(node_id))
 
-    def get_runbook(self, runbook_id: str):
-        return self.client.node.api.runbook.get(runbook_id)
+    def get_runbook(self, runbook_name_or_id: str):
+        return str(self.client.runbook.get(runbook_name_or_id))
 
     def get_node_inventory(self, node_ident: str) -> dict:
         """Fetch node inventory data from Ironic API.