Follow-up from "Update capitalization and backticks in ci docs"

The following discussions from !17313 (merged) should be addressed:

• @eread started a discussion:

  I guess there is a chance this creates ambiguity.

  I've let a few of these through on other MRs, but ideally we don't use numbers as the linking text, but something more descriptive. We have some guidance here: https://docs.gitlab.com/ee/development/documentation/styleguide.html#links.

  My suggestion:

  - Related epic [tracking planned improvements](https://gitlab.com/groups/gitlab-org/-/epics/1716).

• @eread started a discussion:

  This issue is closed. Let's find a better link and use descriptive link text.

• @eread started a discussion:

  This issue is closed. Let's find a better link and use descriptive link text.