[Ruby][RSpec] RelishApp URL is unavailable, but the content is accessible on rspec.info

[tksmasaki]

Description

When generating a Ruby client, RSpec files are created with reference comments to https://www.relishapp.com/rspec/rspec-expectations/docs/built-in-matchers. However, since RelishApp is currently unavailable, the referenced content cannot be accessed.
The content is accessible on https://rspec.info/features/3-12/rspec-expectations/built-in-matchers/ .

ref: https://rspec.info/documentation/

openapi-generator version

OpenAPI Generator version: 6.5.0

Suggest a fix/enhancement

I suggest that replace the URL https://www.relishapp.com/rspec/rspec-expectations/docs/built-in-matchers with a valid RSpec documentation URL, such as https://rspec.info/features/3-12/rspec-expectations/built-in-matchers/ .

[wing328]

can you please file a PR with the suggested change? thank you.

[tksmasaki]

I opened PR: #15164