update video URLs

Author: mattn

_data/y2017/timetable.yml

@@ -27,7 +27,7 @@
     twitter-id: fatih
   talk:
     slide: https://speakerdeck.com/farslan/the-past-and-future-of-vim-go
-    video: 
+    video: http://www.youtube.com/timedtext_video?ref=share&v=Zaq4in5xGD4
     language: english
 
 - start: "13:05 - 14:05"
@@ -98,7 +98,7 @@
     twitter-id: dice_zu
   talk:
     slide: https://speakerdeck.com/daisuzu/how-ordinary-vim-user-contributed-to-vim
-    video: 
+    video: http://www.youtube.com/timedtext_video?v=WUdAjvR1WYE&ref=share
     language: japanese
 
 - start: "17:10 - 17:30"