DOCS-13838 Add error message notice to enableReadConcern

Author: ianf-mongodb

source/reference/configuration-options.txt

@@ -4205,7 +4205,12 @@ LDAP Parameters
 
    Starting in MongoDB 5.0, 
    :setting:`~replication.enableMajorityReadConcern` cannot be changed 
-   and is always set to ``true``. In earlier versions of MongoDB, 
+   and is always set to ``true``. Attempting to start a storage engine 
+   that does not support majority read concern with the 
+   ``--enableMajorityReadConcern`` option will fail and return an error
+   message.
+   
+   In earlier versions of MongoDB, 
    :setting:`~replication.enableMajorityReadConcern` was configurable.
 
    .. warning::