Proofread redis (#6499)

* Without the "it", the clause sounds incomplete.

Author: enderandpeter

redis.md

@@ -99,7 +99,7 @@ If your application is utilizing a cluster of Redis servers, you should define t
 
     ],
 
-By default, clusters will perform client-side sharding across your nodes, allowing you to pool nodes and create a large amount of available RAM. However, note that client-side sharding does not handle failover; therefore, is primarily suited for cached data that is available from another primary data store. If you would like to use native Redis clustering, you should specify this in the `options` key of your Redis configuration:
+By default, clusters will perform client-side sharding across your nodes, allowing you to pool nodes and create a large amount of available RAM. However, note that client-side sharding does not handle failover; therefore, it is primarily suited for cached data that is available from another primary data store. If you would like to use native Redis clustering, you should specify this in the `options` key of your Redis configuration:
 
     'redis' => [