Add back link

Author: parlough

src/content/release/release-notes/index.md

@@ -13,6 +13,7 @@ check out the Flutter [CHANGELOG][].
 :::
 
 * 3.32.0
+  * [3.32.0 announcement][]
   * [3.32.0 release notes & change log][]
   * [3.32.0 breaking changes & migrations][]
 * 3.29.0