fixing links

Author: eedugon

deploy-manage/upgrade/plan-upgrade.md

@@ -38,7 +38,7 @@ Before upgrading, verify that your current environment supports the version you
     `REST API compatibility` is a per-request opt-in feature that can help REST clients mitigate non-compatible (breaking) changes to the REST API.
     ::::
 
-* **Index compatibility**: {{es}} provides full query and write support for indices created in the previous major version. If you have indices created in 7.x or earlier, you must reindex, delete, or [mark them as read-only](/deploy-manage/upgrade/deployment-or-cluster/reading-indices-from-older-elasticsearch-versions.md) before upgrading to 9.x. This topic is covered during the [upgrade preparations](prepare-to-upgrade.md#prepare-to-upgrade-from-8.x), with help from the Upgrade Assistant.
+* **Index compatibility**: {{es}} provides full query and write support for indices created in the previous major version. If you have indices created in 7.x or earlier, you must reindex, delete, or [mark them as read-only](/deploy-manage/upgrade/deployment-or-cluster/reading-indices-from-older-elasticsearch-versions.md) before upgrading to 9.x. This topic is covered during the [upgrade preparations](prepare-to-upgrade.md#prepare-upgrade-from-8.x), with help from the Upgrade Assistant.
 
 * **{{es}} upgrade path**: Check the [upgrade paths](../upgrade.md#upgrade-paths) to determine whether you must upgrade through an intermediate version (such as 8.19.x before moving to 9.x), or if you can upgrade directly to the target version.
 

deploy-manage/upgrade/prepare-to-upgrade.md

@@ -7,6 +7,8 @@ applies_to:
     ess:
     ece:
     self:
+products:
+  - id: elasticsearch
 ---
 # Prepare to upgrade
 
@@ -129,7 +131,7 @@ Follow these steps to prepare for a successful major upgrade from 8.x to 9.x:
         In Elasticsearch 9.x, you can use the [archive functionality](/deploy-manage/upgrade/deployment-or-cluster/reading-indices-from-older-elasticsearch-versions.md) to access snapshots of 7.x or earlier indices, without needing to reindex or run an older cluster. This provides a convenient option to retain historical data in case you choose to delete those indices and keep them only in existing snapshots.
         ::::
 
-    3. Review the deprecation logs from the Upgrade Assistant to determine if your applications are using features that are not supported or behave differently in 9.x. See the [breaking changes](/release-notes/breaking-changes.md) for more information about changes in 9.x that could affect your application.
+    3. Review the deprecation logs from the Upgrade Assistant to determine if your applications are using features that are not supported or behave differently in 9.x. See the [breaking changes](elasticsearch://release-notes/breaking-changes.md) for more information about changes in 9.x that could affect your application.
 
         ::::{note}
         Make sure you check the breaking changes for each 9.x release up to your target release.