Condev topic renamed without redirect
This file: https://gitlab.com/gitlab-org/gitlab/blob/12-6-stable-ee/doc/user/instance_statistics/dev_ops_score.md is present in GitLab 12.6 and later, but not 12.5 and earlier: https://gitlab.com/gitlab-org/gitlab/blob/12-5-stable-ee/doc/user/instance_statistics/dev_ops_score.md.
It replaced https://gitlab.com/gitlab-org/gitlab/blob/12-5-stable-ee/doc/user/instance_statistics/convdev.md, which is not present in 12.6 and later: https://gitlab.com/gitlab-org/gitlab/blob/12-6-stable-ee/doc/user/instance_statistics/convdev.md.
We should put a redirect in, for folks still possibly using the old link, per: https://docs.gitlab.com/ee/development/documentation/#changing-document-location.
CC @mjang1 for assignment (relates to devopsmanage), but happy for @aqualls to take a look also.