edits for style

Author: Ed Costello

draft/reference/current-op.txt

@@ -8,7 +8,7 @@ Current Operation Reporting
 
 The :method:`db.currentOp()` helper in the :program:`mongo` shell
 reports on the current operations running on the :program:`mongod`
-instance. The command returns the ``inprog`` array that contains a
+instance. The command returns the ``inprog`` array which contains a
 document for each in progress operation. Consider the following
 example output:
 
@@ -132,7 +132,7 @@ Output Reference
 .. data:: locks
 
    The :data:`locks` document reports on the kinds of locks the
-   operation currently holds. The following lock types are possible:
+   operation currently holds. The following kinds of locks are possible:
 
    .. data:: locks.^
 
@@ -156,7 +156,7 @@ Output Reference
 
    Returns a boolean value. :data:`waitingForLock` is ``true`` if the
    operation is waiting for a lock and ``false`` if the operation has
-   the lock that it needs to complete.
+   the lock which it needs to complete.
 
 .. data:: msg