wifi: Update vts test for GetLinkLayerStats()

Bug: 246988155
Test: atest VtsHalWifiStaIfaceTargetTest
Change-Id: I0f3f211f5ff5374834da60214d45bba1b8a47b7a
diff --git a/wifi/aidl/vts/functional/wifi_sta_iface_aidl_test.cpp b/wifi/aidl/vts/functional/wifi_sta_iface_aidl_test.cpp
index ef7e274..5e55315 100644
--- a/wifi/aidl/vts/functional/wifi_sta_iface_aidl_test.cpp
+++ b/wifi/aidl/vts/functional/wifi_sta_iface_aidl_test.cpp
@@ -145,7 +145,7 @@
     std::shared_ptr<IWifiStaIface> iface;
     auto status = createStaIface(&iface);
     if (status.isOk()) {
-        EXPECT_GT(link_layer_stats.iface.timeSliceDutyCycleInPercent, 0);
+        EXPECT_GT(link_layer_stats.iface.links[0].timeSliceDutyCycleInPercent, 0);
     }
 
     // Disable link layer stats collection.