DOCSP-33330 Fix autoMergerIntervalSecs Examples (#5028)

* DOCSP-33330 Fix autoMergerIntervalSecs Examples

* nit

Author: ajhuh-mdb

source/reference/parameters.txt

@@ -3359,19 +3359,19 @@ Sharding Parameters
 
    ``autoMergerIntervalSecs`` can only be set on config servers.
 
-   This example sets ``autoMergerIntervalSecs`` to 7200 milliseconds, 
+   This example sets ``autoMergerIntervalSecs`` to 7200 seconds, 
    or two hours, at startup:
 
    .. code-block:: bash
 
-      mongod --setParameter autoMergeInterval=7200
+      mongod --setParameter autoMergerIntervalSecs=7200
 
    During run time, you can set or modify the parameter with the
    :dbcommand:`setParameter` command:
 
    .. code-block:: javascript
 
-      db.adminCommand( { setParameter: 1, autoMergeInterval: 7200 } )
+      db.adminCommand( { setParameter: 1, autoMergerIntervalSecs: 7200 } )
 
 .. parameter:: autoMergerThrottlingMS