Update release-notes.md

Author: sethmanheim

azure-stack/operator/release-notes.md

@@ -116,7 +116,7 @@ When you update to a new major version (for example, 1.2108.x to 1.2206.x), the
 
 After the installation of 2408, if any hotfixes for 2408 are subsequently released, you should install them:
 
-- [Azure Stack Hub hotfix 1.2408.1.38](hotfix-1-2408-1-38.md)
+- [Azure Stack Hub hotfix 1.2408.1.39](hotfix-1-2408-1-39.md)
 ::: moniker-end
 
 ::: moniker range="azs-2406"