| name | about | labels |

| ---------- | ------------------------------------- | -------- |

| Bug Report | Use this template for reporting a bug | kind/bug |

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### Describe the current behavior / 问题描述 (Mandatory / 必填)

mindquantum.core.parameterresolver.is_const() 检查ParamaterResolver的常量，常量为0也返回True，与文档描述矛盾

### Environment / 环境信息 (Mandatory / 必填)

- **Hardware Environment(`Ascend`/`GPU`/`CPU`) / 硬件环境**:

> Please delete the backend not involved / 请删除不涉及的后端:

> /device ascend/GPU/CPU/kirin/等其他芯片

- **Software Environment / 软件环境 (Mandatory / 必填)**:

-- MindSpore version (e.g., 1.7.0.Bxxx) :

-- Python version (e.g., Python 3.7.5) :

-- OS platform and distribution (e.g., Linux Ubuntu 16.04):

-- GCC/Compiler version (if compiled from source):

- **Excute Mode / 执行模式 (Mandatory / 必填)(`PyNative`/`Graph`)**:

> Please delete the mode not involved / 请删除不涉及的模式:

> /mode pynative

> /mode graph

### Related testcase / 关联用例 (Mandatory / 必填)

### Steps to reproduce the issue / 重现步骤 (Mandatory / 必填)

1.

2.

3.

> https://mindspore.cn/mindquantum/docs/zh-CN/master/_modules/mindquantum/core/parameterresolver/parameterresolver.html#ParameterResolver.is_const


```

from mindquantum.core import ParameterResolver as PR

pr = PR(0)

print(pr.is_const())

>>> True

```

### Describe the expected behavior / 预期结果 (Mandatory / 必填)

### Related log / screenshot / 日志 / 截图 (Mandatory / 必填)

### Special notes for this issue/备注 (Optional / 选填)