docs[FormItem]: update FormItem name attribute type (#6897)

Author: cc-hearts

components/form/index.en-US.md

@@ -84,7 +84,7 @@ A form consists of one or more form fields whose type includes input, textarea,
 | label | Label text | string\|slot |  |  |
 | labelAlign | text align of label | 'left' \| 'right' | 'right' |  |
 | labelCol | The layout of label. You can set `span` `offset` to something like `{span: 3, offset: 12}` or `sm: {span: 3, offset: 12}` same as with `<Col>` | [object](/components/grid/#col) |  |  |
-| name | a key of `model`. In the use of validate and resetFields method, the attribute is required | string |  | 2.0.0 |
+| name | a key of `model`. In the use of validate and resetFields method, the attribute is required | [NamePath](#namepath) |  | 2.0.0 |
 | required | Whether provided or not, it will be generated by the validation rule. | boolean | false |  |
 | rules | validation rules of form | object \| array |  |  |
 | validateFirst | Whether stop validate on first rule of error for this field. | boolean | false |  |

components/form/index.zh-CN.md

@@ -85,7 +85,7 @@ coverDark: https://mdn.alipayobjects.com/huamei_7uahnr/afts/img/A*ylFATY6w-ygAAA
 | label | label 标签的文本 | string\|slot |  |  |
 | labelAlign | 标签文本对齐方式 | 'left' \| 'right' | 'right' |  |
 | labelCol | label 标签布局，同 `<Col>` 组件，设置 `span` `offset` 值，如 `{span: 3, offset: 12}` 或 `sm: {span: 3, offset: 12}` | [object](/components/grid-cn/#col) |  |  |
-| name | 表单域 model 字段，在使用 validate、resetFields 方法的情况下，该属性是必填的 | string |  |  |
+| name | 表单域 model 字段，在使用 validate、resetFields 方法的情况下，该属性是必填的 | [NamePath](#namepath) |  |  |
 | required | 是否必填，如不设置，则会根据校验规则自动生成 | boolean | false |  |
 | rules | 表单验证规则 | object \| array |  |  |
 | validateFirst | 当某一规则校验不通过时，是否停止剩下的规则的校验。 | boolean | false | 2.0.0 |