feat: add thematic break to the Che server parameters reference (ecli…

…pse-che#2180)

modules/installation-guide/examples/checluster-properties.adoc

@@ -118,7 +118,7 @@ identityProviderRoute: Route custom settings.
 identityProviderSecret: The secret that contains `user` and `password` for Identity Provider. When the secret is defined, the `identityProviderAdminUserName` and `identityProviderPassword` are ignored. When the value is omitted or left blank, the one of following scenarios applies\: 1. `identityProviderAdminUserName` and `identityProviderPassword` are defined, then they will be used. 2. `identityProviderAdminUserName` or `identityProviderPassword` are not defined, then a new secret with the name `che-identity-secret` will be created with default value `admin` for `user` and with an auto-generated value for `password`.
 identityProviderURL: Public URL of the Identity Provider server (Keycloak / RH-SSO server). Set this ONLY when a use of an external Identity Provider is needed. See the `externalIdentityProvider` field. By default, this will be automatically calculated and set by the Operator.
 initialOpenShiftOAuthUser: For operating with the OpenShift OAuth authentication, create a new user account since the kubeadmin can not be used. If the value is true, then a new OpenShift OAuth user will be created for the HTPasswd identity provider. If the value is false and the user has already been created, then it will be removed. If value is an empty, then do nothing. The user's credentials are stored in the `openshift-oauth-user-credentials` secret in 'openshift-config' namespace by Operator. Note that this solution is Openshift 4 platform-specific.
-nativeUserMode: Enables native user mode. Currently works only on OpenShift and DevWorkspace operator. Native User mode uses OpenShift OAuth directly as identity provider, without Keycloak.
+nativeUserMode: Enables native user mode. Currently works only on OpenShift and DevWorkspace engine. Native User mode uses OpenShift OAuth directly as identity provider, without Keycloak.
 oAuthClientName: Name of the OpenShift `OAuthClient` resource used to setup identity federation on the OpenShift side. Auto-generated when left blank. See also the `OpenShiftoAuth` field.
 oAuthSecret: Name of the secret set in the OpenShift `OAuthClient` resource used to setup identity federation on the OpenShift side. Auto-generated when left blank. See also the `OAuthClientName` field.
 openShiftoAuth: Enables the integration of the identity provider (Keycloak / RHSSO) with OpenShift OAuth. Empty value on OpenShift by default. This will allow users to directly login with their OpenShift user through the OpenShift login, and have their workspaces created under personal OpenShift namespaces. WARNING\: the `kubeadmin` user is NOT supported, and logging through it will NOT allow accessing the Che Dashboard.