DOCS-12492: tweak - add admonition about chunk migration and update links to use ref instead of doc

Author: kay-kim

source/reference/command/cleanupOrphaned.txt

@@ -127,18 +127,28 @@ you may prefer to include a pause in-between iterations.
 Alternatively, to mitigate the impact of :dbcommand:`cleanupOrphaned`,
 you may prefer to run the command at off peak hours.
 
-It is also possible to tune the performance impact of :dbcommand:`cleanupOrphaned`
-with two server parameters :parameter:`rangeDeleterBatchSize`
-and :parameter:`rangeDeleterBatchDelayMS`
+It is also possible to tune the performance impact of
+:dbcommand:`cleanupOrphaned` with the parameters,
+:parameter:`rangeDeleterBatchSize` and
+:parameter:`rangeDeleterBatchDelayMS`. For example:
 
-To limit the number of documents deleted per batch, you can set
-`rangeDeleterBatchSize` to a small value such as `32`.
+- To limit the number of documents deleted per batch, you can set
+  :parameter:`rangeDeleterBatchSize` to a small value such as ``32``.
 
-To add an additional delay between batch deletions, you can set
-`rangeDeleterBatchDelayMS` above the current default of `20` milliseconds.
+- To add an additional delay between batch deletions, you can set
+  :parameter:`rangeDeleterBatchDelayMS` above the current default of
+  ``20`` milliseconds.
 
-Note that these affect all range deletion including normal
-:doc:`chunk migration</core/sharding-balancer-administration/#chunk-migration-procedure>`.
+.. note::
+
+   Changing :parameter:`rangeDeleterBatchSize` and
+   :parameter:`rangeDeleterBatchDelayMS` affect all range deletion,
+   including normal :ref:`chunk
+   migration<chunk-migration-procedure>`.
+
+   If you are temporarily modifying one or both of these parameters to
+   run :dbcommand:`cleanupOrphaned`, return to their previous values
+   after you run :dbcommand:`cleanupOrphaned`.
 
 .. _cleanupOrphaned-determine-range: