[BUG] [JAVA][ASCIIDOC] Bug with converting enums to asciidoc

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

Enums inside of my json will only show up as an empty title inside of Asciidoc files generated with the Maven Plugin, with $refs to them also not linking up to them.

openapi-generator version

5.4.0

OpenAPI declaration file content or url

As an example, an enum like this:

      "Priority": {
        "type": "string",
        "enum": [
          "LOW",
          "NORMAL",
          "HIGH",
          "VERY HIGH"
        ]
      }

would end up being created like this:

Is this a known issue or am I doing something wrong?

Start with the Maven Plugin's Asciidoc generation path and reproduce the issue using the JSON enum declaration shown in the report. Compare the generated enum title and references with the expected named section and working links; the fix is complete when enum names and $ref links render correctly in the generated Asciidoc.