DOCS-209: minor edits

Author: Sam Kleinman

source/reference/server-status.txt

@@ -504,7 +504,7 @@ repl
    See :doc:`/core/replication` for more information on replication.
 
 opcounters
------------
+----------
 
 .. status:: opcounters
 
@@ -553,45 +553,45 @@ opcounters
    instance last started.
 
 opcountersRepl
------------
+--------------
 
 .. status:: opcountersRepl
 
-   The :status:`opcountersRepl` data structure, similar to the 
+   The :status:`opcountersRepl` data structure, similar to the
    :status:`opcounters` data structure, provides an overview of
-   database replication operations by type and makes it possible to 
+   database replication operations by type and makes it possible to
    analyze the load on the replica in more granular manner.  These
    values only appear when the current host has replication enabled.
 
-   These values will differ from the primary :status:`opcounters` because 
-   of how operations are serialized during replication.  See 
-   :doc:`/core/replication` for more information on replication.
+   These values will differ from the :status:`opcounters` values
+   because of how MongoDB serializes operations during replication.
+   See :doc:`/core/replication` for more information on replication.
 
    These numbers will grow over time and in response to database
    use. Analyze these values over time to track database utilization.
 
 .. status:: opcountersRepl.insert
 
    :status:`opcountersRepl.insert` provides a counter of the total number
-   of replicated insert operations since the :program:`mongod` instance 
+   of replicated insert operations since the :program:`mongod` instance
    last started.
 
 .. status:: opcountersRepl.query
 
    :status:`opcountersRepl.query` provides a counter of the total number
-   of replicated queries since the :program:`mongod` instance last 
+   of replicated queries since the :program:`mongod` instance last
    started.
 
 .. status:: opcountersRepl.update
 
    :status:`opcountersRepl.update` provides a counter of the total number
-   of replicated update operations since the :program:`mongod` instance 
+   of replicated update operations since the :program:`mongod` instance
    last started.
 
 .. status:: opcountersRepl.delete
 
    :status:`opcountersRepl.delete` provides a counter of the total number
-   of replicated delete operations since the :program:`mongod` instance 
+   of replicated delete operations since the :program:`mongod` instance
    last started.
 
 .. status:: opcountersRepl.getmore
@@ -605,7 +605,7 @@ opcountersRepl
 .. status:: opcountersRepl.command
 
    :status:`opcountersRepl.command` provides a counter of the total number
-   of replicated commands issued to the database since the 
+   of replicated commands issued to the database since the
    :program:`mongod` instance last started.
 
 asserts