Author: David Monllao
MDL-49377 admin: Refining message
Credit goes to Helen Foster.
http://git.moodle.org/gw?p=moodle.git;a=commit;h=53456d0ec4515ece3b985db22a1ddbb930a5c443
http://github.com/moodle/moodle/commit/53456d0ec4515ece3b985db22a1ddbb930a5c443
+ 2.9 en [updateavailablerecommendation,core_admin]