Update ci to ce doc to make it clearer when you are done if you don't want to keep your data.

doc/migrate_ci_to_ce/README.md

@@ -28,13 +28,15 @@ upgrade to 8.0 until you finish the migration procedure.
 ### Before upgrading
-If you have GitLab CI installed using omnibus-gitlab packages but *you don't want to migrate your existing data*:
+If you have GitLab CI installed using omnibus-gitlab packages but **you don't want to migrate your existing data**:
 ```bash
 mv /var/opt/gitlab/gitlab-ci/builds /var/opt/gitlab/gitlab-ci/builds.$(date +%s)
 ```
-and run `sudo gitlab-ctl reconfigure`.
+run `sudo gitlab-ctl reconfigure` and you can reach CI at `gitlab.example.com/ci`.
+
+If you want to migrate your existing data, continue reading.
 #### 0. Updating Omnibus from versions prior to 7.13