Fixed variable name in the example usage
Fixed variable name in the example usage

gallodigital/redis-rb,byroot/redis-rb,Shopify/redis-rb,gallodigital/redis-rb,redis/redis-rb,plribeiro3000/redis-rb,ckhall/redis-rb,byroot/redis-rb,Shopify/redis-rb,plribeiro3000/redis-rb,gallodigital/redis-rb,Shopify/redis-rb,byroot/redis-rb,ckhall/redis-rb,ckhall/redis-rb,redis/redis-rb,redis/redis-rb