Update SDK_tutorial_zh.md

zhifu gao

2023-07-02 6043d1119260c3f8b83859bd9f3fa719e3f0342d

 funasr/export/export_model.py

@@ -192,6 +192,7 @@
                config, model_file, cmvn_file, 'cpu'
            )
            self.frontend = model.frontend
            self.export_config["feats_dim"] = 560
        elif mode.startswith('offline'):
            from funasr.tasks.vad import VADTask
            config = os.path.join(model_dir, 'vad.yaml')