Bug 1481409 - Use HTTPS protocol for Mozilla's Credits link in AUTHORS file r=mossop

MozReview-Commit-ID: 5PilYB0g3tv

Differential Revision: https://phabricator.services.mozilla.com/D2857

--HG--
extra : moz-landing-system : lando

AUTHORS

@@ -1,2 +1,2 @@
 For a full list of the people who are credited with making a
-contribution to Mozilla, see http://www.mozilla.org/credits/ .
+contribution to Mozilla, see https://www.mozilla.org/credits/ .