Update modules/ROOT/pages/authentication-authorization/manage-roles.adoc

Co-authored-by: Phil Wright <[email protected]>

Author: renetapopova

modules/ROOT/pages/authentication-authorization/manage-roles.adoc

@@ -590,7 +590,7 @@ Immutable roles are those that cannot be modified in the usual way.
 This means they cannot be created, renamed, dropped, or have privileges granted to or revoked from them under normal operating conditions.
 See xref:authentication-authorization/immutable-roles-privileges.adoc[Immutable roles and privileges] for details of when and how the `IMMUTABLE` keyword may be used.
 
-They are useful in cases where you need a permanent built-in system role that cannot be modified even by users who have xref:authentication-authorization/dbms-administration.adoc#access-control-dbms-administration-role-management[`ROLE MANAGEMENT` privileges].
+They are useful in cases where you need a permanent built-in system role that cannot be modified even by users who have xref:authentication-authorization/dbms-administration.adoc#access-control-dbms-administration-role-management[`ROLE MANAGEMENT` privileges] but yet can be granted to and revoked from users in the same way as an ordinary role.
 
 
 [[access-control-rename-roles]]