style(test): prettier formatting in export e2e spec

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

ApiCore-Backend/test/export.e2e-spec.ts

@@ -191,9 +191,9 @@ describe('Export (e2e)', () => {
         .set('Authorization', `Bearer ${beekeeperToken}`)
         .expect(200);
       expect(response.headers['content-type']).toContain('application/pdf');
-      expect(
+      expect((response.body as Buffer).subarray(0, 4).toString('latin1')).toBe(
-        (response.body as Buffer).subarray(0, 4).toString('latin1'),
+        '%PDF',
-      ).toBe('%PDF');
+      );
     }
   });