Fixes typo in redis initializer

I noticed a crash that kept occurring in my app like this:

```bash
2014-09-26 16:55:36 - debug: Redis Connection Closed (client):
2014-09-26 16:55:36 - debug: Redis Connection Closed (subscriber):
2014-09-26 16:55:37 - debug: connected to redis (client)

/vagrant/indy/node_modules/actionhero/node_modules/redis/index.js:834
        throw new Error("Connection in subscriber mode, only subscriber comman
              ^
Error: Connection in subscriber mode, only subscriber commands may be used
    at RedisClient.send_command (/vagrant/indy/node_modules/actionhero/node_modules/redis/index.js:834:15)
    at RedisClient.select (/vagrant/indy/node_modules/actionhero/node_modules/redis/index.js:1007:10)
    at RedisClient.<anonymous> (/vagrant/indy/node_modules/actionhero/initializers/redis.js:93:67)
    at RedisClient.emit (events.js:92:17)
    at RedisClient.on_connect (/vagrant/indy/node_modules/actionhero/node_modules/redis/index.js:271:14)
    at Socket.<anonymous> (/vagrant/indy/node_modules/actionhero/node_modules/redis/index.js:98:14)
    at Socket.emit (events.js:117:20)
    at Object.afterConnect [as oncomplete] (net.js:886:10)
```

Eventually I discovered a typo in the redis initializer that causes actionhero to try to reconnect the subscriber redis whenever the client redis loses its connection, causing the above error.

Simple fix.