[update] update readme

README.md

@@ -135,8 +135,9 @@ This will download the model checkpoint to the checkpoints folder inside your ch
 3. **Run the model**
 ```bash
 python decode.py \
-    --model_checkpoint path/to/chunkformer-large-vie \
-    --long_form_audio path/to/long_audio.wav \
+    --model_checkpoint path/to/local/chunkformer-large-vie \
+    --max_duration 14400 \ #in second, default is 1800
+    --long_form_audio path/to/audio.wav \
     --chunk_size 64 \
     --left_context_size 128 \
     --right_context_size 128