springdoc-openapi-data-rest produces broken schema (`Link` self ref) for HAL hypermedia types

[ch4mpy]

Describe the bug
Schema definiton for Link is a reference to itself, leading to StackOverflowError in openapi-generator-cli

versions

• spring-boot 2.2.6.RELEASE
• springdoc-openapi-ui and springdoc-openapi-data-rest both in version 1.3.4 & springdoc-openapi-maven-plugin version 0.3

Minimal sample to reproduce

• clone https://github.com/ch4mpy/springdoc-openapi-609
• run ./mvnw install
• submit generated dtos.json (target folder) to https://apitools.dev/swagger-parser/online/

Expected behavior
Schema Link definition is as follow

"Link":{"$ref":"#/components/schemas/Link"}

It should be

"Link": {
	"type": "object",
	"properties": {
	  "href": {
		"type": "string"
	  },
	  "hreflang": {
		"type": "string"
	  },
	  "media": {
		"type": "string"
	  },
	  "title": {
		"type": "string"
	  },
	  "type": {
		"type": "string"
	  },
	  "deprecation": {
		"type": "string"
	  },
	  "profile": {
		"type": "string"
	  },
	  "name": {
		"type": "string"
	  }
	}
}

[bnasslahsen]

@ch4mpy,

Its now fixed. You can test with the lastest snapshot and give your feedback.

[ch4mpy]

@bnasslahsen Using 1.3.5-SNAPSHOT, I could generate Angular code from Spring project without hacking intermediate schema.

Thank you!