Update OpenApi v2 docs for some API endpoints

What does this MR do and why?

This merge request updates some of the ~"group::release" related API endpoints that were missing a few necessary changes to ensure all OpenApi v2 documentations for those APIs are complying with this extensive list.

Resolves:

• https://gitlab.com/gitlab-org/gitlab/-/issues/376896
• https://gitlab.com/gitlab-org/gitlab/-/issues/376897
• https://gitlab.com/gitlab-org/gitlab/-/issues/376898
• https://gitlab.com/gitlab-org/gitlab/-/issues/376900
• https://gitlab.com/gitlab-org/gitlab/-/issues/376905
• https://gitlab.com/gitlab-org/gitlab/-/issues/376906
• https://gitlab.com/gitlab-org/gitlab/-/issues/376907
• https://gitlab.com/gitlab-org/gitlab/-/issues/376909
• https://gitlab.com/gitlab-org/gitlab/-/issues/376975
• https://gitlab.com/gitlab-org/gitlab/-/issues/377050

When this is merged, all ~"group::release" FedRAMP issues will be done!

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.