(DOCSP-37597) Adds note to migration page for redirected readers (#299)

Author: sarahsimpers

source/migrate-to-atlas-cli.txt

@@ -6,12 +6,23 @@ Migrate to the {+atlas-cli+}
 
 .. default-domain:: mongodb
 
+.. facet::
+   :name: genre
+   :values: tutorial
+
 .. contents:: On this page
    :local:
    :backlinks: none
    :depth: 1
    :class: singlecol
 
+.. note::
+
+   ``mongocli atlas`` commands for MongoCLI are now deprecated. Follow
+   the steps on this page to migrate to the {+atlas-cli+} and run
+   :doc:`{+atlas-cli+} commands </command/atlas>` instead of
+   ``mongocli atlas`` commands.
+
 If you have already configured {+mcli+}, you can migrate your settings to the
 {+atlas-cli+} easily. Migrating to the {+atlas-cli+} preserves existing {+mcli+}
 profiles and saved |api| keys. If you haven't already configured