fixing sharding documentation rst

Author: Sam Kleinman

draft/core/sharding.txt

@@ -54,7 +54,7 @@ MongoDB has the following features:
       cluster without intervention from the application
       layer. Effective automatic sharding depends on a well chosen
       :ref:`shard key <sharding-shard-key>`, but requires no
-      additional complexity, modifications, or intervention from 
+      additional complexity, modifications, or intervention from
       developers.
 
    Transparent Sharding
@@ -213,10 +213,9 @@ for your data service needs.
    possibility of more even data distribution, but increase the
    likelihood of chunk migrations. Larger chunks decrease the need for
    migrations, but increase the amount of time required for a chunk
-   migration.
-
-   .. seealso:: The ":ref:`sharding-chunk-size`" section in the
-      :doc:`sharding-internals` document.
+   migration. See the ":ref:`sharding-chunk-size`" section in the
+   :doc:`sharding-internals` document for more information on this
+   topic.
 
 .. index:: shard key
    single: sharding; shard key
@@ -387,14 +386,14 @@ as "**targeted**" or "**global**, as follows:
    specific :program:`mongod` or a small number of :program:`mongod`
    instances:
 
-     .. code-block:: javascript
+   .. code-block:: javascript
 
-        db.collection.find( { shard_id: 355 } )
-        db.collection.find( { shard_id: 52, host: "example.org" } )
-        db.collection.insert( { shard_id: 155, host: "example.net", [...] } )
-        db.collection.insert( { [...] } ) // all insert operations are targeted.
-        db.collection.update( { shard_id: 112, host: "example.org"} , { $inc: { counter: 1 } } )
-        db.collection.remove( { shard_id: 355 } )
+      db.collection.find( { shard_id: 355 } )
+      db.collection.find( { shard_id: 52, host: "example.org" } )
+      db.collection.insert( { shard_id: 155, host: "example.net", [...] } )
+      db.collection.insert( { [...] } ) // all insert operations are targeted.
+      db.collection.update( { shard_id: 112, host: "example.org"} , { $inc: { counter: 1 } } )
+      db.collection.remove( { shard_id: 355 } )
 
 #. *Global* operations, where the :program:`mongos` sends the
    operations to *all* :program:`mongod` instances, and then combines