readme: Fix code sample.
readme: Fix code sample.

superkinglabs/redis,jackyan/redis-1,vmihailenco/redis,adjust/redis,HatsuneMiku3939/redis,go-redis/redis,HatsuneMiku3939/redis,go-redis/redis,SocialExplorerFork/redis,HatsuneMiku3939/redis,cw2018/redis-1,d4rk5eed/redis,eyalpost/redis,HatsuneMiku3939/redis,linkedin-inc/redis,icha024/redis