give migration page toc and description

diff --git a/docs/4.0/migration.md b/docs/4.0/migration.md
index 59ffaacbee6358e4232f6f05ee68c82cf89c1c0c..043e1fef0187b60494be349c34755a10c74a043d 100644 (file)
--- a/docs/4.0/migration.md
+++ b/docs/4.0/migration.md
@@ -1,11 +1,11 @@
 ---
 layout: docs
 title: Migrating to v4
+description: Bootstrap 4 is a major rewrite of the entire project. The most notable changes are summarized below, followed by more specific changes to relevant components.
 group: migration
+toc: true
 ---
 
-Bootstrap 4 is a major rewrite of the entire project. The most notable changes are summarized below, followed by more specific changes to relevant components.
-
 {% callout info %}
 **Heads up!** This will be in flux as work on the v4 alphas progresses. Until then consider it incomplete, and we'd love pull requests to help keep it up to date.
 {% endcallout %}