MDL-53945 mnet: Use moodle_url to provide string with url
MDL-53945 mnet: Use moodle_url to provide string with url

Using moodle_url where possible is preferable to hardcoding uri's as
moodle_url is able to take care of alot of the formatting for us.

In this instance, it handles the $CFG->admin url path for us.

dilawar/moodle