DOCS-12054: audit event replSetReconfig

Author: kay-kim

source/reference/audit-message.txt

@@ -82,9 +82,8 @@ associated ``param`` details and the ``result`` values, if any.
             args: <command object>
           }
 
-       ``ns`` field is optional.
-
-       ``args`` field may be redacted.
+       | ``ns`` field is optional.
+       | ``args`` field may be redacted.
 
      - | ``0`` - Success
        | ``13`` - Unauthorized to perform the operation.
@@ -457,6 +456,33 @@ associated ``param`` details and the ``result`` values, if any.
 
      - ``0`` - Success
 
+   * - ``replSetReconfig``
+
+     - .. code-block:: none
+          :copyable: false
+
+          {
+            old: {
+             _id: <replicaSetName>,
+             version: <number>,
+             ...
+             members: [ ... ],
+             settings: { ... }
+            },
+            new: {
+             _id: <replicaSetName>,
+             version: <number>,
+             ...
+             members: [ ... ],
+             settings: { ... }
+            }
+          }
+
+       For details on the replica set configuration document, see
+       :doc:`/reference/replica-configuration`.
+
+     - ``0`` - Success
+
    * - :authaction:`enableSharding`
 
      - .. code-block:: none