[BUG] Description

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?

Description

samples/client/petstore/go/go-petstore/README.md references a var petstore.ContextAccessToken, but it doesn't exist in code.

openapi-generator version

master

Steps to reproduce

https://github.com/OpenAPITools/openapi-generator/blob/master/samples/client/petstore/go/go-petstore/configuration.go does not contain ContextAccessToken even though it does in the README

Related issues/PRs

Suggest a fix

In client.mustache, the code with ContextAccessToken is only inserted if hasHttpBearerMethods is true. I don't see hasHttpBearerMethods at all in README.mustache. Should it be added there? I can make a PR if so.

Compare samples/client/petstore/go/go-petstore/README.md with the generated configuration.go, then inspect modules/openapi-generator/src/main/resources/go/client.mustache and README.mustache. Trace how hasHttpBearerMethods affects the generated README and configuration, and verify that the documented ContextAccessToken usage matches the generated Go client.