Cleans up some Vale substitution warnings

doc/administration/gitaly/praefect.md

doc/administration/packages/index.md

doc/administration/pages/index.md

doc/administration/pages/source.md

doc/administration/troubleshooting/kubernetes_cheat_sheet.md

doc/administration/troubleshooting/linux_cheat_sheet.md

doc/administration/troubleshooting/tracing_correlation_id.md

doc/api/issues.md

doc/api/search.md

...rchitecture/blueprints/cloud_native_gitlab_pages/index.md

doc/ci/ci_cd_for_external_repos/bitbucket_integration.md

doc/ci/ci_cd_for_external_repos/github_integration.md

doc/ci/ci_cd_for_external_repos/index.md

doc/ci/docker/using_docker_build.md

doc/ci/examples/deploy_spring_boot_to_cloud_foundry/index.md

...i/examples/devops_and_game_dev_with_gitlab_ci_cd/index.md

doc/ci/examples/semantic-release.md

doc/ci/quick_start/README.md

doc/ci/yaml/visualization.md

doc/development/contributing/community_roles.md