Update administration/operations/ssh_certificates.md

Reword version history to use the standard format

doc/administration/operations/ssh_certificates.md

@@ -6,8 +6,7 @@ info: To determine the technical writer assigned to the Stage/Group associated w
 
 # User lookup via OpenSSH's AuthorizedPrincipalsCommand **(FREE SELF)**
 
-> [Available in](https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/19911) GitLab
-> Community Edition 11.2.
+> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/19911) in GitLab 11.2.
 
 The default SSH authentication for GitLab requires users to upload their SSH
 public keys before they can use the SSH transport.