splitting: fix docs for string-lines.
splitting: fix docs for string-lines.

AlexIljin/factor,bjourne/factor,AlexIljin/factor,AlexIljin/factor,bpollack/factor,AlexIljin/factor,nicolas-p/factor,tgunr/factor,bpollack/factor,bpollack/factor,bjourne/factor,bpollack/factor,tgunr/factor,mrjbq7/factor,mrjbq7/factor,tgunr/factor,bjourne/factor,nicolas-p/factor,factor/factor,factor/factor,mrjbq7/factor,nicolas-p/factor,bjourne/factor,tgunr/factor,bjourne/factor,mrjbq7/factor,tgunr/factor,bpollack/factor,AlexIljin/factor,factor/factor,bjourne/factor,factor/factor,bpollack/factor,AlexIljin/factor,tgunr/factor,factor/factor,mrjbq7/factor,factor/factor,AlexIljin/factor,nicolas-p/factor,bpollack/factor,mrjbq7/factor,bjourne/factor,nicolas-p/factor,nicolas-p/factor,nicolas-p/factor