Update Chinese (Traditional) translation

locales/zh-TW.json

@@ -463,5 +463,7 @@
     "channel_tab_streams_label": "直播",
     "Artist: ": "藝術家： ",
     "Album: ": "專輯： ",
-    "Music in this video": "此影片中的音樂"
+    "Music in this video": "此影片中的音樂",
+    "Channel Sponsor": "頻道贊助者",
+    "Song: ": "歌曲： "
 }