test: corrected item name (#25075)

diff --git a/erpnext/manufacturing/doctype/routing/test_routing.py b/erpnext/manufacturing/doctype/routing/test_routing.py
index 73d05a6..7071bc1 100644
--- a/erpnext/manufacturing/doctype/routing/test_routing.py
+++ b/erpnext/manufacturing/doctype/routing/test_routing.py
@@ -74,7 +74,7 @@
 		})
 
 	if not args.raw_materials:
-		if not frappe.db.exists('Item', "Test Extra Item 1"):
+		if not frappe.db.exists('Item', "Test Extra Item N-1"):
 			make_item("Test Extra Item N-1", {
 				'is_stock_item': 1,
 			})
@@ -88,4 +88,4 @@
 	else:
 		bom_doc = frappe.get_doc("BOM", name)
 
-	return bom_doc
\ No newline at end of file
+	return bom_doc