Revert "io.encodings.utf16: update docs for utf16n."
Revert "io.encodings.utf16: update docs for utf16n."

This reverts commit e6fdc8fd51610fc5f273f462ff85878caec96bdf.

tgunr/factor,mrjbq7/factor,mrjbq7/factor,factor/factor,mrjbq7/factor,AlexIljin/factor,AlexIljin/factor,mrjbq7/factor,AlexIljin/factor,AlexIljin/factor,tgunr/factor,AlexIljin/factor,factor/factor,mrjbq7/factor,bpollack/factor,tgunr/factor,tgunr/factor,bpollack/factor,factor/factor,AlexIljin/factor,bpollack/factor,factor/factor,mrjbq7/factor,tgunr/factor,factor/factor,factor/factor,AlexIljin/factor,bpollack/factor,bpollack/factor,bpollack/factor,tgunr/factor,bpollack/factor