Follow-up from "doc: ci/include: note about caching"

The following discussions from !22654 (merged) should be addressed:

• @eread started a discussion: (+2 comments)

  Suggested edit:

  YAML files included from a remote host are cached when a pipeline is created. Retried jobs will not use updates made to these YAML files. New pipelines must be created for changes introduced by YAML files included from a remote host to take effect.

• @eread started a discussion:

  recreate the pipeline.

• @eread started a discussion:

  To have remote includes affect pipelines,

• @eread started a discussion:

  pipeline with stages containing jobs and retried jobs are already created.

• @eread started a discussion:

  At pipeline creation, `.gitlab-ci.yml` is expanded to create the

• @eread started a discussion:

  because the include is evaluated at pipeline creation time.

• @eread started a discussion:

  Changes to remote includes will not affect already created pipelines,