wording

Author: norareidy

source/crud/read-write-config.txt

@@ -187,8 +187,8 @@ Sharded Clusters
 ~~~~~~~~~~~~~~~~
 
 You can specify a read preference when connecting to a sharded cluster.
-MongoDB uses sharding to distribute large amounts of data across
-multiple servers. A sharded cluster, or the set of nodes in a sharded deployment,
+MongoDB uses sharding to divide datasets by key ranges and distribute data across multiple
+database instances. A sharded cluster, or the set of nodes in a sharded deployment,
 includes the following components:
 
 - **Shard**: A replica set that contains a subset of the sharded data.