Removes milestone from cluster base domain

12.0 milestone was removed from cluster base domain on AutoDevOps
documentation to avoid making fake promises.

doc/topics/autodevops/index.md

@@ -128,7 +128,7 @@ Auto Deploy, and Auto Monitoring will be silently skipped.
 NOTE: **Note**
 `AUTO_DEVOPS_DOMAIN` environment variable is deprecated and
-[is scheduled to be removed](https://gitlab.com/gitlab-org/gitlab-ce/issues/56959) in GitLab 12.0.
+[is scheduled to be removed](https://gitlab.com/gitlab-org/gitlab-ce/issues/56959).
 The Auto DevOps base domain is required if you want to make use of [Auto
 Review Apps](#auto-review-apps) and [Auto Deploy](#auto-deploy). It can be defined
@@ -211,8 +211,7 @@ other environments.
 NOTE: **Note:**
 From GitLab 11.8, `KUBE_INGRESS_BASE_DOMAIN` replaces `AUTO_DEVOPS_DOMAIN`.
-`AUTO_DEVOPS_DOMAIN` [is scheduled to be removed](https://gitlab.com/gitlab-org/gitlab-ce/issues/56959)
-in GitLab 12.0.
+`AUTO_DEVOPS_DOMAIN` [is scheduled to be removed](https://gitlab.com/gitlab-org/gitlab-ce/issues/56959).
 ## Enabling/Disabling Auto DevOps
@@ -685,7 +684,7 @@ also be customized, and you can easily use a [custom buildpack](#custom-buildpac
 | **Variable**                 | **Description**                                                                                                                                                                                                               |
 | ------------                 | ---------------                                                                                                                                                                                                               |
-| `AUTO_DEVOPS_DOMAIN`         | The [Auto DevOps domain](#auto-devops-domain). By default, set automatically by the [Auto DevOps setting](#enabling-auto-devops). This variable is deprecated and [is scheduled to be removed](https://gitlab.com/gitlab-org/gitlab-ce/issues/56959) in GitLab 12.0. Use `KUBE_INGRESS_BASE_DOMAIN` instead. |
+| `AUTO_DEVOPS_DOMAIN`         | The [Auto DevOps domain](#auto-devops-domain). By default, set automatically by the [Auto DevOps setting](#enabling-auto-devops). This variable is deprecated and [is scheduled to be removed](https://gitlab.com/gitlab-org/gitlab-ce/issues/56959). Use `KUBE_INGRESS_BASE_DOMAIN` instead. |
 | `AUTO_DEVOPS_CHART`          | The Helm Chart used to deploy your apps; defaults to the one [provided by GitLab](https://gitlab.com/charts/auto-deploy-app).                                                             |
 | `AUTO_DEVOPS_CHART_REPOSITORY` | The Helm Chart repository used to search for charts; defaults to `https://charts.gitlab.io`. |
 | `REPLICAS`                   | The number of replicas to deploy; defaults to 1.                                                                                                                                                                              |