chore(docs): upgrade doc intro

Author: dreamorosi

Diff for: docs/upgrade.md

@@ -10,4 +10,7 @@ This release includes some breaking changes, please take some time to review thi
 ### Quick summary
 
 !!! warning
-    This guide is a work in progress. We'll update it as we get closer to the 2.0 release. If you have any questions, or want to follow the progress, please join the discussion on the [GitHub issue](https://github.com/aws-powertools/powertools-lambda-typescript/issues/1714).
+    This guide is a work in progress. We'll update it as we get closer to the 2.0 release. If you have any questions, or want to follow the progress, please join the discussion on the [GitHub issue](https://github.com/aws-powertools/powertools-lambda-typescript/issues/1714).
+
+| Area | Change | Code change required |
+| ---- | ------ | -------------------- |