fix whitspaces

Author: Priyankasaggu11929

examples/node_labels.py

@@ -38,9 +38,9 @@ def main():
     }
 
     # Listing the cluster nodes
-    node_list = api_instance.list_node()   
+    node_list = api_instance.list_node()
+    
     print("%s\t\t%s" % ("NAME", "LABELS"))
-
     # Patching the node labels
     for node in node_list.items:
         api_response = api_instance.patch_node(node.metadata.name, body)