Docs feedback: Add back CI runner environment variable table
The CI runner variables documentation page has seen a serious degrade in releases after version 11.9, such as 11.11 https://docs.gitlab.com/11.11/ee/ci/variables/README.html
The newer doc pages are missing the environment variable table entirely, which used to be available e.g. in the documentation page for version 11.9
https://docs.gitlab.com/11.9/ee/ci/variables/README.html#predefined-environment-variables
Picture comparison in case either of these links stop working: