minor: update serverStatus

Fixes a typo in the serverStatus documentation.

Signed-off-by: kay <kay.kim@10gen.com>

Author: ksuarz

source/reference/command/serverStatus.txt

@@ -51,7 +51,7 @@ all :ref:`server-status-repl` information in the output:
 
 .. code-block:: javascript
 
-   db.runCommand( { serverStatus: 1,  rangeDeleter: 1, repl: 1 } )
+   db.runCommand( { serverStatus: 1, rangeDeleter: 1, repl: 1 } )
 
 Output
 ------
@@ -333,14 +333,13 @@ dur (Journaling)
 
    :serverstatus:`dur` (journaling) information only appears for
    :program:`mongod` instances that use the :doc:`MMAPv1
-   </core/mmapv1>` storage engine. storage engine and have journaling
-   enabled.
+   </core/mmapv1>` storage engine and have journaling enabled.
 
 .. serverstatus:: dur
 
-   A document that reports on the :program:`mongod` instance's
+   A document that reports the :program:`mongod` instance's
    :doc:`journaling-related operations </core/journaling>` and
-   performance. The MongoDB reports on this data based on 3 second
+   performance. MongoDB reports on this data based on 3 second
    intervals, collected between 3 and 6 seconds in the past.
 
 .. serverstatus:: dur.commits