update m2met docs

yhliang

2023-04-26 5a48c1cb7f0e13ec9828a9bf7845e684ee0a8d27

 funasr/tasks/abs_task.py

@@ -467,7 +467,7 @@
        parser.add_argument(
            "--batch_interval",
            type=int,
            default=10000,
            default=-1,
            help="The batch interval for saving model.",
        )
        group.add_argument(