Fix jsdoc warning
Fix jsdoc warning

jsdoc complains that:
  WARNING: The @public tag does not permit a value;
           the value will be ignored.

This should use the "type" annotation instead of "public".

Change-Id: Ibb31bd16568297cb283ca68691109fb5172e55a8

vimond/shaka-player,brightcove/shaka-player,russitto/shaka-player,shaka-project/shaka-player,indiereign/shaka-player,indiereign/shaka-player,shaka-project/shaka-player,TheModMaker/shaka-player,indiereign/shaka-player,Ross-cz/shaka-player,TobbeEdgeware/shaka-player,russitto/shaka-player,TheModMaker/shaka-player,brightcove/shaka-player,TheModMaker/shaka-player,TobbeEdgeware/shaka-player,Ross-cz/shaka-player,brightcove/shaka-player,tvoli/shaka-player,tvoli/shaka-player,vimond/shaka-player,shaka-project/shaka-player,russitto/shaka-player,Ross-cz/shaka-player,tvoli/shaka-player,TobbeEdgeware/shaka-player,vimond/shaka-player,shaka-project/shaka-player,tvoli/shaka-player,TheModMaker/shaka-player