rephrase the comment

src/master-playlist-controller.js

@@ -1078,7 +1078,7 @@ export class MasterPlaylistController extends videojs.EventTarget {
       // Since we're on the final non-blacklisted playlist, and we're about to blacklist it,
       // instead of erring the player or retrying this playlist, we clear out the current blacklist
       // so the other playlists may be attempted in case any have been fixed.
-      videojs.log.warn('Clearing blacklist for every playlist because last rendition ' +
+      videojs.log.warn('Removing all playlists from the blacklist because the last rendition ' +
                        'is about to be blacklisted.');
       playlists.forEach((playlist) => {
         delete playlist.excludeUntil;

test/videojs-contrib-hls.test.js

@@ -1141,7 +1141,7 @@ QUnit.test('playlist 404 should blacklist media', function(assert) {
   assert.ok(media.excludeUntil > 0, 'second media was blacklisted after playlist 404');
   assert.equal(this.env.log.warn.calls, 2, 'warning logged for blacklist');
   assert.equal(this.env.log.warn.args[1],
-              'Clearing blacklist for every playlist because last rendition is about to be blacklisted.',
+              'Removing all playlists from the blacklist because the last rendition is about to be blacklisted.',
               'log generic error message');
   assert.equal(this.env.log.warn.args[2],
               'Problem encountered with the current HLS playlist. HLS playlist request error at URL: media1.m3u8. ' +