Fix typo in redis.conf doc (#8362)
Fix typo in redis.conf doc (#8362)

Fix incorrect documentation about default save time
oranagra/redis,oranagra/redis,antirez/redis,antirez/redis,PKRoma/redis,neomantra/redis,oranagra/redis,yossigo/redis,charsyam/redis,ctripcorp/redis,PKRoma/redis,oranagra/redis,yossigo/redis,ctripcorp/redis,PKRoma/redis,ofirluzon/redis,neomantra/redis,soloestoy/redis,PKRoma/redis,antirez/redis,soloestoy/redis,ctripcorp/redis,ofirluzon/redis,charsyam/redis,neomantra/redis,soloestoy/redis,antirez/redis,yossigo/redis,ofirluzon/redis,oranagra/redis,ctripcorp/redis,soloestoy/redis,charsyam/redis,charsyam/redis,charsyam/redis,PKRoma/redis,ofirluzon/redis,neomantra/redis,yossigo/redis,ofirluzon/redis,yossigo/redis,neomantra/redis,soloestoy/redis