Fix: broken link in contract email (#11528)

Author: OlufunkeMoronfolu

content/en/docs/deployment/general/subscription-management/_index.md

@@ -1,10 +1,14 @@
 ---
 title: "Subscription Management"
 url: /developerportal/deploy/subscription-management/
+aliases:
+    - /developerportal/deploy/contract-management/
 weight: 10
 description: "Understand your Mendix subscription lifecycle, subscription statuses, renewal timelines, and critical actions to ensure continuous service and prevent data loss."
 ---
 
+<!-- DO NOT remove any of the anchors in this document. Should you change the URl, please add the "aliases" -->
+
 ## Introduction
 
 The Mendix Contract Management system ensures a seamless and predictable Mendix experience by keeping you fully informed of contract statuses and maintaining data portability throughout your Mendix subscription lifecycle.