Reorganize Links in the Main Navbar to the Front Page

Change-Id: Ia30b175784474592469f9a862592125416d15726
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2227310
Auto-Submit: Robert Liao <[email protected]>
Reviewed-by: Wei Li <[email protected]>
Commit-Queue: Wei Li <[email protected]>
Cr-Commit-Position: refs/heads/master@{#774427}
diff --git a/docs/ui/index.md b/docs/ui/index.md
index cdf7b44..d64a1e7 100644
--- a/docs/ui/index.md
+++ b/docs/ui/index.md
@@ -16,6 +16,13 @@
 Details on Chrome UI.
 
 * [Best Practices](/docs/ui/learn/index.md#best-practices)
+* [Product Excellence](/docs/ui/product_excellence/index.md)
+* [UI Devtools](/docs/ui/ui_devtools/index.md)
+* [Views](/docs/ui/views/overview.md)
+
+Archival Documentation on Chrome UI.
+* [Aura](/docs/ui/aura/index.md)
+* [Compositor](/docs/ui/compositor/index.md)
 
 Processes