Update README.md

Update command and gaudi_config.json description.

README.md

@@ -15,6 +15,9 @@ This model only contains the `GaudiConfig` file for running the [Wav2Vec2](https
 This enables to specify:
 - `use_fused_adam`: whether to use Habana's custom AdamW implementation
 - `use_fused_clip_norm`: whether to use Habana's fused gradient norm clipping operator
+- `disable_autocast`: whether to disable autocast; this parameter takes precedence over --bf16 flag and is temporary as some scripts produce nan values. 
+   In those cases this parameter is already present in huggingface topology Habana gaudi_config.json.
+
 
 ## Usage
 
@@ -44,7 +47,8 @@ python run_audio_classification.py \
     --use_habana \
     --use_lazy_mode \
     --gaudi_config_name Habana/wav2vec2 \
-    --throughput_warmup_steps 2
+    --throughput_warmup_steps 2 \
+    --bf16
 ```
 
 Check the [documentation](https://huggingface.co/docs/optimum/habana/index) out for more advanced usage and examples.