[Bug]: https://milvus.io/docs/zh/use-json-fields.md 文档有误，并且pymilvus.exceptions.MilvusException: <MilvusException: (code=1100, message=INVERTED are not supported on JSON field: invalid parameter[expected=valid index params][actual=invalid index params])>

[deku0818]

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Describe the bug

文档中

**index_params = client.prepare_index_params()**

index_params.add_index(
    field_name="metadata",
    index_type="INVERTED",
    index_name="json_index_1",
    params={
        "json_path": "metadata[\"product_info\"][\"category\"]",
        "json_cast_type": "varchar"
    }
)

index_params.add_index(
    field_name="metadata",
    index_type="INVERTED",
    index_name="json_index_2",
    params={
        "json_path": "metadata[\"price\"]",
        "json_cast_type": "double"
    }
)

**index_params = client.prepare_index_params()**

index_params.add_index(
    field_name="embedding",
    index_name="vector_index",
    index_type="AUTOINDEX",  # Use automatic indexing to simplify complex index settings
    metric_type="COSINE"  # Specify similarity metric type, options include L2, COSINE, or IP
)

这里index_params = client.prepare_index_params() 定义了两次，之前定义JSON INDEX 被重新初始化了，这里只有一个embedding 的 AUTOINDEX
并且如果 去掉多余的index_params = client.prepare_index_params() ，执行会报错pymilvus.exceptions.MilvusException: <MilvusException: (code=1100, message=INVERTED are not supported on JSON field: invalid parameter[expected=valid index params][actual=invalid index params])>

Expected Behavior

No response

Steps/Code To Reproduce behavior

Environment details

- Hardware/Softward conditions (OS, CPU, GPU, Memory):
- Method of installation (Docker, or from source):
- Milvus version (v0.3.1, or v0.4.0):
- Milvus configuration (Settings you made in `server_config.yaml`):

Anything else?

No response