*yo* is missing in transcription.csv

[ogmartins]

哟，他怎么来了？
Yó，tā zěnme lái le？
Oh, how did he get here?

Transcription of yo

yo,ㄧㄛ,iɔ

[tsroten]

@ogmartins Great point! Feel free to open a pull request to add this transcription to the CSV file.

Thanks!