fix typo

server/djrandom/frontend/static/js/djr/backend.js

@@ -228,6 +228,7 @@ djr.Backend.prototype.nowPlaying = function(song, old_songs) {
  * Report that we skipped a song.
  *
  * @param {string} song SHA1 hash of the song that was skipped
+ */
 djr.Backend.prototype.skipSong = function(song) {
   $.ajax({url: '/json/skip',
           data: {'cur': song},