Update docs because label ~"master:flaky" renamed ~"failure::flaky-test"
What does this MR do?
Updates the docs because label ~"master:flaky" was renamed failureflaky-test
See https://gitlab.com/gitlab-org/quality/team-tasks/issues/224
Updates the docs because label ~"master:flaky" was renamed failureflaky-test
See https://gitlab.com/gitlab-org/quality/team-tasks/issues/224