DOCS-865 cleanup formatting errors

Author: Ed Costello

source/reference/command/addShard.txt

@@ -53,5 +53,5 @@ addShard
 
       :method:`sh.addShard()`,
       :doc:`/administration/sharding`,
-      :doc:`/tutorial/add-shards-to-shard-cluster.txt`,
-      :doc:`/tutorial/remove-shards-from-cluster.txt`
+      :doc:`/tutorial/add-shards-to-shard-cluster`,
+      :doc:`/tutorial/remove-shards-from-cluster`

source/reference/method/sh.addShard.txt

@@ -13,7 +13,7 @@ sh.addShard()
    Use this method to add a database instance or replica set to a
    :term:`sharded cluster`.
    This method must be run on a :program:`mongos` instance.
-   The :param:`host` parameter can be in any of the following forms:
+   The ``host`` parameter can be in any of the following forms: ::
 
         [hostname]
         [hostname]:[port]
@@ -34,10 +34,10 @@ sh.addShard()
    The :dbcommand:`addShard` command has additional options which are
    not available in this method.
 
-   .. seealso:
+   .. seealso::
 
       :dbcommand:`addShard`,
       :doc:`/administration/sharding`,
-      :doc:`/tutorial/add-shards-to-shard-cluster.txt`,
-      :doc:`/tutorial/remove-shards-from-cluster.txt`
+      :doc:`/tutorial/add-shards-to-shard-cluster`,
+      :doc:`/tutorial/remove-shards-from-cluster`
 

source/tutorial/deploy-shard-cluster.txt

@@ -112,7 +112,7 @@ port ``27017``, issue the following command:
 
    mongo mongos0.example.net
 
-Then, from a:program:`mongo` shell connected to the :program:`mongos`
+Then, from a :program:`mongo` shell connected to the :program:`mongos`
 instance, call the :method:`sh.addShard()` method for each shard that
 you want to add to the cluster: