minor: style changes

Author: Sam Kleinman

source/administration/tag-aware-sharding.txt

@@ -174,8 +174,8 @@ shards tagged with ``NYC``:
 You can find tag ranges for all :term:`namespaces <namespace>` in the
 :data:`~config.tags` collection of the ``config`` database. The output
 of :method:`sh.status()` displays all tag ranges. To return all shard
-key ranges tagged with ``NYC``, issue the following sequence of
-commands:
+key ranges tagged with ``NYC``, use the following sequence of
+operations:
 
 .. code-block:: javascript
 

source/data-center-awareness.txt

@@ -10,7 +10,7 @@ MongoDB provides a number of features that allow application
 developers and database administrators to customize the behavior of a
 :term:`sharded cluster` or :term:`replica set` deployment so that
 MongoDB may be *more* "data center aware," or allow operational
-separation and location-based separation.
+and location-based separation.
 
 MongoDB also supports segregation based
 on functional parameters, to ensure that certain :program:`mongod`