Update deploy-manage/upgrade/orchestrator/upgrade-cloud-enterprise.md

Co-authored-by: Edu González de la Herrán <[email protected]>

Author: kosabogi

deploy-manage/upgrade/orchestrator/upgrade-cloud-enterprise.md

@@ -24,6 +24,10 @@ The following table shows the recommended upgrade paths from older Elastic Cloud
 | 2.13 | 1. Upgrade to 3.8.0<br>2. Upgrade to 4.0.0<br> |
 | 2.5-2.12 | 1. Upgrade to 2.13.4<br>2. Upgrade to 3.8.0<br>3. Upgrade to 4.0.0<br> |
 | 2.0-2.4 | 1. Upgrade to 2.5.1<br>2. Upgrade to 2.13.4<br>3. Upgrade to 3.8.0<br>4. Upgrade to 4.0.0<br> |
+In case you have to upgrade to any of the intermediate versions, follow the upgrade instructions of the relevant release before upgrading to 4.0.0:
+- [ECE 2.5 Upgrade](https://www.elastic.co/guide/en/cloud-enterprise/2.5/ece-upgrade.html)
+- [ECE 2.13 Upgrade](https://www.elastic.co/guide/en/cloud-enterprise/2.13/ece-upgrade.html)
+- [ECE 3.8 Upgrade](https://www.elastic.co/guide/en/cloud-enterprise/3.7/ece-upgrade.html)
 
 ## The upgrade process [ece-upgrade-overview]