Docs: Update reference links to use lowercase
<!-- * Use this issue template for suggesting new docs or updates to existing docs. Note: Doc work as part of feature development is covered in the Feature Request template. * For issues related to features of the docs.gitlab.com site, see https://gitlab.com/gitlab-org/technical-writing/docs-gitlab-com/-/issues * For information about documentation content and process, see https://docs.gitlab.com/development/documentation/ --> - [x] Start this issue's title with `Docs:` or `Docs feedback:`. ## Problem to solve In our style guide for [text for links](https://docs.gitlab.com/development/documentation/styleguide/#text-for-links), we recommend the following: > Use descriptive text for links, rather than words like here or this page. For the name of a topic or page, use lowercase. You don’t have to match the text to the topic or page name exactly. Edit the text to be descriptive and fit the guidelines. This issue is to update the ~"devops::create" and ~"devops::plan" stage docs to adhere to this guidance. ## Other links/references - MR discussion [comment](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/221704#note_3055300880)
issue