Fix flags in the instructions.

PiperOrigin-RevId: 332918217

official/nlp/nhnet/README.md

@@ -104,14 +104,13 @@ Please first install TensorFlow 2 and Tensorflow Model Garden following the
 ```shell
 $ python3 trainer.py \
     --mode=train_and_eval \
-    --vocab=/path/to/bert_checkpoint/vocab.txt \
     --init_checkpoint=/path/to/bert_checkpoint/bert_model.ckpt \
     --params_override='init_from_bert2bert=false' \
     --train_file_pattern=$DATA_FOLDER/processed/train.tfrecord* \
     --model_dir=/path/to/output/model \
     --len_title=15 \
     --len_passage=200 \
-    --max_num_articles=5 \
+    --num_nhnet_articles=5 \
     --model_type=nhnet \
     --train_batch_size=16 \
     --train_steps=10000 \
@@ -123,14 +122,13 @@ $ python3 trainer.py \
 ```shell
 $ python3 trainer.py \
     --mode=train_and_eval \
-    --vocab=/path/to/bert_checkpoint/vocab.txt \
     --init_checkpoint=/path/to/bert_checkpoint/bert_model.ckpt \
     --params_override='init_from_bert2bert=false' \
     --train_file_pattern=$DATA_FOLDER/processed/train.tfrecord* \
     --model_dir=/path/to/output/model \
     --len_title=15 \
     --len_passage=200 \
-    --max_num_articles=5 \
+    --num_nhnet_articles=5 \
     --model_type=nhnet \
     --train_batch_size=1024 \
     --train_steps=10000 \