UI: Change surround sound warning to signal YouTube support

YouTube Live now supports 5.1 surround sound.
The surround sound warning in Settings has been updated to reflect that.

Signed-off-by: pkv <[email protected]>

UI/data/locale/en-US.ini

@@ -1148,7 +1148,7 @@ Basic.Settings.Audio.PeakMeterType="Peak Meter Type"
 Basic.Settings.Audio.PeakMeterType.SamplePeak="Sample Peak"
 Basic.Settings.Audio.PeakMeterType.TruePeak="True Peak (Higher CPU usage)"
 Basic.Settings.Audio.MultichannelWarning.Enabled="WARNING: Surround sound audio is enabled."
-Basic.Settings.Audio.MultichannelWarning="If streaming, check to see if your streaming service supports both surround sound ingest and surround sound playback. Facebook 360 Live is one example where surround sound is fully supported. Although Facebook Live and YouTube Live both accept surround ingest, Facebook Live downmixes to stereo, and YouTube Live plays only two channels.\n\nOBS audio filters are compatible with surround sound, though VST plugin support isn't guaranteed."
+Basic.Settings.Audio.MultichannelWarning="If streaming, check to see if your streaming service supports both surround sound ingest and surround sound playback. For instance, Facebook 360 Live fully supports surround sound; YouTube Live supports 5.1 audio ingest (and playback on TVs).\n\nOBS audio filters are compatible with surround sound, though VST plugin support isn't guaranteed."
 Basic.Settings.Audio.MultichannelWarning.Title="Enable surround sound audio?"
 Basic.Settings.Audio.MultichannelWarning.Confirm="Are you sure you want to enable surround sound audio?"
 Basic.Settings.Audio.Devices="Global Audio Devices"