increase token length in example codes

README.md

@@ -44,7 +44,7 @@ inputs = tokenizer(text, return_tensors="pt")
 inputs.to(device)
 model.to(device)
 
-outputs = model.generate(input_ids=inputs["input_ids"], attention_mask=inputs["attention_mask"], max_new_tokens=10, pad_token_id=tokenizer.eos_token_id)
+outputs = model.generate(input_ids=inputs["input_ids"], attention_mask=inputs["attention_mask"], max_new_tokens=300, pad_token_id=tokenizer.eos_token_id)
 result = tokenizer.decode(outputs[0], skip_special_tokens=True)
 print(result)
 ```