binary-search: improve example for search.
binary-search: improve example for search.

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