Small fix

src/webgpu/api/operation/pipeline/pipeline_layout_created_with_null_bind_group_layout.spec.ts

@@ -269,7 +269,7 @@ works correctly.
 
     const code = `
     ${declarations}
-    @compute @workgroup_size(1, 1)
+    @compute @workgroup_size(1)
     fn main() {
       ${statement};
     }