Fixes readability

Replaces "by connecting mongodump by connecting to a" and increases readability

Signed-off-by: Sam Kleinman <[email protected]>

Author: geoghegan

source/tutorial/backup-small-sharded-cluster-with-mongodump.txt

@@ -37,9 +37,9 @@ Capture Data
    :program:`mongos`. This option is only available when running
    directly against a :term:`replica set` member.
 
-To perform a backup of a :term:`sharded cluster` by connecting
-:program:`mongodump` by connecting to a :program:`mongos`, use the
-following operation at your system's prompt:
+You can perform a backup of a :term:`sharded cluster` by connecting
+:program:`mongodump` to a :program:`mongos`. Use the following
+operation at your system's prompt:
 
 .. code-block:: sh