DOCS-502: minor changes to enable redirection

Author: Sam Kleinman

source/core/replication-internals.txt

@@ -13,10 +13,10 @@ normal operation or application development but may be useful for
 troubleshooting and for further understanding MongoDB's behavior and approach.
 
 .. index:: replica set; local database
-.. _replica-set-oplog:
+.. _replica-set-local-database:
 
-The Local Database
-------------------
+The ``local`` Database
+----------------------
 
 The ``local`` database exists on every :program:`mongod` instance and
 stores replication data specific to that instance. The ``local``
@@ -25,7 +25,7 @@ database are not replicated.
 
 When :setting:`auth` is enabled, authenticating against the ``local``
 database is equivalent to authenticating against the ``admin``
-database. This authentication gives access to all databases. 
+database. This authentication gives access to all databases.
 
 In replication, the ``local`` database store stores internal replication
 data for each member of a :term:`replica set`. The ``local`` database contains the
@@ -74,6 +74,7 @@ the following collections:
      This contains information about the slave's master server.
 
 .. index:: replica set; oplog
+.. _replica-set-oplog:
 .. _replica-set-internals-oplog:
 
 Oplog
@@ -83,7 +84,7 @@ For an explanation of the oplog, see the :ref:`replica-set-oplog-sizing`
 topic in the :doc:`/core/replication` document.
 
 Under various exceptional
-situations, updates to a :term:`secondary's <secondary>` oplog might 
+situations, updates to a :term:`secondary's <secondary>` oplog might
 lag behind the desired performance time. See
 :ref:`Replication Lag <replica-set-replication-lag>` for details.