math.libm: add missing right parenthesis in description of fexp word
math.libm: add missing right parenthesis in description of fexp word

bjourne/factor,bjourne/factor,dch/factor,nicolas-p/factor,dch/factor,bjourne/factor,bpollack/factor,bpollack/factor,slavapestov/factor,bpollack/factor,bpollack/factor,factor/factor,AlexIljin/factor,slavapestov/factor,mrjbq7/factor,dch/factor,mrjbq7/factor,sarvex/factor-lang,sarvex/factor-lang,tgunr/factor,sarvex/factor-lang,sarvex/factor-lang,AlexIljin/factor,slavapestov/factor,nicolas-p/factor,dch/factor,AlexIljin/factor,slavapestov/factor,nicolas-p/factor,dch/factor,factor/factor,factor/factor,bjourne/factor,tgunr/factor,tgunr/factor,mrjbq7/factor,bjourne/factor,factor/factor,mrjbq7/factor,AlexIljin/factor,dch/factor,slavapestov/factor,bjourne/factor,nicolas-p/factor,nicolas-p/factor,tgunr/factor,AlexIljin/factor,bpollack/factor,slavapestov/factor,slavapestov/factor,AlexIljin/factor,nicolas-p/factor,factor/factor,bpollack/factor,mrjbq7/factor,tgunr/factor,bjourne/factor,nicolas-p/factor,bpollack/factor,sarvex/factor-lang,sarvex/factor-lang,tgunr/factor,sarvex/factor-lang,mrjbq7/factor,factor/factor,AlexIljin/factor