How to enable services notes and host notes on raw edition version: 2.1.0p15

[r.sander (Robert Sander)]

What you are looking at is the field for custom service notes:

@Heavy

And there is the Custom host notes and Custom service notes field which appear at the bottom of host and service views. The contents of those fields are taken from the ~/etc/check_mk/notes directory of a Checkmk site.

This is not the Notes URL you configured with the rule above. This can be found in the action menu of the service.