Checkmk Werk 12670: API: fixing service show link in services collection endpoint

ID: 12670 Title: API: fixing service show link in services collection endpoint Component: Core & setup Level: 1 Class: Bug fix Version: 2.1.0i1 In the previous version, calling the 'Show all monitored services' endpoint returned a collection where the individual links to the respective services were invalid. This werk introduces the appropriate endpoint and also fixes the links.