Update streams/mn.m3u

Co-authored-by: LaneSh4d0w <lanesh4d0w@gmail.com>

streams/mn.m3u

@@ -16,7 +16,7 @@ http://d1qwew1jz60jqg.cloudfront.net/MYASIATV/TV5/playlist.m3u8
 #EXTINF:-1 tvg-id="" status="online",MNB Гэр бүл
 https://live.mnb.mn/live/mnb_family.stream/playlist.m3u8
 #EXTINF:-1 tvg-id="UBS.mn" status="online",UBS
-https://cdn1.skygo.mn/live/disk1/UBSHD/DASH-FTA/UBSHD-avc1_600000=1-2367045670000000.mp4
+https://cdn1.skygo.mn/live/disk1/UBSHD/DASH-FTA/UBSHD.mpd
 #EXTINF:-1 tvg-id="TV25.mn" status="online",MN25
 https://cdn2.skygo.mn/live/disk1/MN25/DASH-FTA/MN25-avc1_1000000=2-2367046720000000.mp4
 #EXTINF:-1 tvg-id="BolovsrolTV.mn" status="online",Education