Fix failing test

src/file/numbering/concrete-numbering.spec.ts

@@ -253,13 +253,11 @@ describe("ConcreteNumbering", () => {
                         ],
                     },
                     {
-                        "w:lvlOverride": [
+                        "w:lvlOverride": {
-                            {
                             _attr: {
                                 "w:ilvl": 3,
                             },
                         },
-                        ],
                     },
                 ],
             });