单个openapi的json格式错误，components中缺少schemas 层级

[ganxj]

Describe the bug
单个接口中Open页面中的JSON格式不对，components中缺少schemas 层级，将这个json导入其他接口文档中时会不识别properties

To Reproduce
Steps to reproduce the behavior:

1. Go to 'http://xxxxx/doc.html'
2. Click on '随便一个接口，然后点击open'
3. Scroll down to 'json中的components处'
4. See error

Expected behavior
json应该符合格式要求

 "components": {
    "schemas": {
         ...
      }
   }

Screenshots

Knife4j Version (please complete the following information):

        <dependency>
            <groupId>com.github.xiaoymin</groupId>
            <artifactId>knife4j-openapi3-spring-boot-starter</artifactId>
            <version>4.5.0</version>
        </dependency>