fix loss normalization for ddp training

haoneng.lhn

2023-12-08 ace42e5043be992c3a324fc637ba0594f10ad3b6

 runtime/android/AndroidClient/app/src/main/res/layout/dialog_input_hotwords.xml

@@ -13,6 +13,6 @@
        android:background="@drawable/edittext_border"
        android:minLines="3"
        android:gravity="top"
        android:hint="每个热词用空格隔开" />
        android:hint="每一行为:热词 权重" />

</LinearLayout>