在modelscope-funasr基于这个代码转写音频，说话人我想只限定两个人，应该怎么修改啊？from funasr import AutoModel

paraformer-zh is a multi-functional asr model

use vad, punc, spk or not as you need

model = AutoModel(model="paraformer-zh", model_revision="v2.0.4",
vad_model="fsmn-vad", vad_model_revision="v2.0.4",
punc_model="ct-punc-c", punc_model_revision="v2.0.4",
spk_model="cam++", spk_model_revision="v2.0.2",
)
res = model.generate(input=f"{model.model_path}/example/asr_example.wav",
batch_size_s=300,
hotword='魔搭')
print(res)