Substitute relative paths with absolute links.

docs/gitlab/4-4-create-gitlab-pages-site.md

docs/gitlab/gitlab-tutorials.md

docs/gitlab/repo-doi.md

docs/gitlab/repo-include.md

docs/open-leadership.md

docs/protocols.md

docs/protocols/protocols_guide_external.md

docs/protocols/protocols_guide_internal-how-1.md

docs/protocols/protocols_guide_internal-how-2.md

docs/protocols/protocols_guide_internal-how-3.md

docs/protocols/protocols_guide_internal-how-4.md

docs/protocols/protocols_guide_internal-why-use.md

docs/protocols/protocols_guide_internal.md

docs/tasks.md

docs/tasks/tasks_guide_internal-how-1.md

docs/tasks/tasks_guide_internal-why-use.md

docs/tools.md

docs/using-this-repo.md