test: fix eql equal

Author: northword

test/tests/abbr.spec.ts

@@ -5,6 +5,6 @@ describe("abbr", () => {
     const _item = new Zotero.Item();
     // eslint-disable-next-line unused-imports/no-unused-vars
     const item = await new UpdateAbbr({}).apply(_item);
-    expect({ a: "1" }).to.equal({ a: "1" });
+    expect({ a: "1" }).to.eql({ a: "1" });
   });
 });