Unicorn worker killer is not Omnibus specific

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doc/administration/environment_variables.md

@@ -20,8 +20,8 @@ Variable | Type | Description
 `GITLAB_EMAIL_FROM`         | string | The e-mail address used in the "From" field in e-mails sent by GitLab
 `GITLAB_EMAIL_DISPLAY_NAME` | string | The name used in the "From" field in e-mails sent by GitLab
 `GITLAB_EMAIL_REPLY_TO`     | string | The e-mail address used in the "Reply-To" field in e-mails sent by GitLab
-`GITLAB_UNICORN_MEMORY_MIN` | integer | The minimum memory threshold (in bytes) for the Unicorn worker killer (supported only in Omnibus)
-`GITLAB_UNICORN_MEMORY_MAX` | integer | The maximum memory threshold (in bytes) for the Unicorn worker killer (supported only in Omnibus)
+`GITLAB_UNICORN_MEMORY_MIN` | integer | The minimum memory threshold (in bytes) for the Unicorn worker killer
+`GITLAB_UNICORN_MEMORY_MAX` | integer | The maximum memory threshold (in bytes) for the Unicorn worker killer
 
 ## Complete database variables