Cannot referenced example in RequestBody

[EstebanDugueperoux2]

Describe the bug
I have an OpenAPI v3 contract interface generated using SpringDoc from Spring Boot java code.
I try to have a JSON requestBody example reference:

            "requestBody":{
               "description":"A commission to update",
               "content":{
                  "application/json":{
                     "schema":{
                        "$ref":"#/components/schemas/CommissionDto"
                     },
                     "examples":{
                        "requestExample":{
                           **"description": "requestExample",**
                           "$ref":"#/components/examples/httpPutCommissionRequestBodyExample"
                        }
                     }
                  }
               },
               "required":true
            }

but "description" field is added which is not standard, consequently validator failed on my contract interface.
And this came from https://github.com/swagger-api/swagger-core/blob/master/modules/swagger-core/src/main/java/io/swagger/v3/core/util/AnnotationsUtils.java#L317 which is called indirectly by SpringDoc.

To Reproduce
To reproduce I have attached a JUnit test case.

fix-Add-JUnit-test.zip

Regards.